20475000

素因数分解:

$2^3\times 3^2\times 5^5\times 7^1\times {\mathrm{13}}^1$

素因数の和:57

約数の個数: 288

約数和(自身を含む): 85307040

約数和(自身を除く): 64832040

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 13, 14, 15, 18, 20, 21, 24, 25, 26, 28, 30, 35, 36, 39, 40, 42, 45, 50, 52, 56, 60, 63, 65, 70, 72, 75, 78, 84, 90, 91, 100, 104, 105, 117, 120, 125, 126, 130, 140, 150, 156, 168, 175, 180, 182, 195, 200, 210, 225, 234, 250, 252, 260, 273, 280, 300, 312, 315, 325, 350, 360, 364, 375, 390, 420, 450, 455, 468, 500, 504, 520, 525, 546, 585, 600, 625, 630, 650, 700, 728, 750, 780, 819, 840, 875, 900, 910, 936, 975, 1000, 1050, 1092, 1125, 1170, 1250, 1260, 1300, 1365, 1400, 1500, 1560, 1575, 1625, 1638, 1750, 1800, 1820, 1875, 1950, 2100, 2184, 2250, 2275, 2340, 2500, 2520, 2600, 2625, 2730, 2925, 3000, 3125, 3150, 3250, 3276, 3500, 3640, 3750, 3900, 4095, 4200, 4375, 4500, 4550, 4680, 4875, 5000, 5250, 5460, 5625, 5850, 6250, 6300, 6500, 6552, 6825, 7000, 7500, 7800, 7875, 8125, 8190, 8750, 9000, 9100, 9375, 9750, 10500, 10920, 11250, 11375, 11700, 12500, 12600, 13000, 13125, 13650, 14625, 15000, 15750, 16250, 16380, 17500, 18200, 18750, 19500, 20475, 21000, 21875, 22500, 22750, 23400, 24375, 25000, 26250, 27300, 28125, 29250, 31500, 32500, 32760, 34125, 35000, 37500, 39000, 39375, 40625, 40950, 43750, 45000, 45500, 48750, 52500, 54600, 56250, 56875, 58500, 63000, 65000, 65625, 68250, 73125, 75000, 78750, 81250, 81900, 87500, 91000, 97500, 102375, 105000, 112500, 113750, 117000, 121875, 131250, 136500, 146250, 157500, 162500, 163800, 170625, 175000, 195000, 196875, 204750, 225000, 227500, 243750, 262500, 273000, 284375, 292500, 315000, 325000, 341250, 365625, 393750, 409500, 455000, 487500, 511875, 525000, 568750, 585000, 682500, 731250, 787500, 819000, 853125, 975000, 1023750, 1137500, 1365000, 1462500, 1575000, 1706250, 2047500, 2275000, 2559375, 2925000, 3412500, 4095000, 5118750, 6825000, 10237500, 20475000]

約数ペア:

[(1, 20475000), (2, 10237500), (3, 6825000), (4, 5118750), (5, 4095000), (6, 3412500), (7, 2925000), (8, 2559375), (9, 2275000), (10, 2047500), (12, 1706250), (13, 1575000), (14, 1462500), (15, 1365000), (18, 1137500), (20, 1023750), (21, 975000), (24, 853125), (25, 819000), (26, 787500), (28, 731250), (30, 682500), (35, 585000), (36, 568750), (39, 525000), (40, 511875), (42, 487500), (45, 455000), (50, 409500), (52, 393750), (56, 365625), (60, 341250), (63, 325000), (65, 315000), (70, 292500), (72, 284375), (75, 273000), (78, 262500), (84, 243750), (90, 227500), (91, 225000), (100, 204750), (104, 196875), (105, 195000), (117, 175000), (120, 170625), (125, 163800), (126, 162500), (130, 157500), (140, 146250), (150, 136500), (156, 131250), (168, 121875), (175, 117000), (180, 113750), (182, 112500), (195, 105000), (200, 102375), (210, 97500), (225, 91000), (234, 87500), (250, 81900), (252, 81250), (260, 78750), (273, 75000), (280, 73125), (300, 68250), (312, 65625), (315, 65000), (325, 63000), (350, 58500), (360, 56875), (364, 56250), (375, 54600), (390, 52500), (420, 48750), (450, 45500), (455, 45000), (468, 43750), (500, 40950), (504, 40625), (520, 39375), (525, 39000), (546, 37500), (585, 35000), (600, 34125), (625, 32760), (630, 32500), (650, 31500), (700, 29250), (728, 28125), (750, 27300), (780, 26250), (819, 25000), (840, 24375), (875, 23400), (900, 22750), (910, 22500), (936, 21875), (975, 21000), (1000, 20475), (1050, 19500), (1092, 18750), (1125, 18200), (1170, 17500), (1250, 16380), (1260, 16250), (1300, 15750), (1365, 15000), (1400, 14625), (1500, 13650), (1560, 13125), (1575, 13000), (1625, 12600), (1638, 12500), (1750, 11700), (1800, 11375), (1820, 11250), (1875, 10920), (1950, 10500), (2100, 9750), (2184, 9375), (2250, 9100), (2275, 9000), (2340, 8750), (2500, 8190), (2520, 8125), (2600, 7875), (2625, 7800), (2730, 7500), (2925, 7000), (3000, 6825), (3125, 6552), (3150, 6500), (3250, 6300), (3276, 6250), (3500, 5850), (3640, 5625), (3750, 5460), (3900, 5250), (4095, 5000), (4200, 4875), (4375, 4680), (4500, 4550)]