20415600

素因数分解:

$2^4\times 3^2\times 5^2\times {\mathrm{53}}^1\times {\mathrm{107}}^1$

素因数の和:184

約数の個数: 180

約数和(自身を含む): 72859176

約数和(自身を除く): 52443576

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 25, 30, 36, 40, 45, 48, 50, 53, 60, 72, 75, 80, 90, 100, 106, 107, 120, 144, 150, 159, 180, 200, 212, 214, 225, 240, 265, 300, 318, 321, 360, 400, 424, 428, 450, 477, 530, 535, 600, 636, 642, 720, 795, 848, 856, 900, 954, 963, 1060, 1070, 1200, 1272, 1284, 1325, 1590, 1605, 1712, 1800, 1908, 1926, 2120, 2140, 2385, 2544, 2568, 2650, 2675, 3180, 3210, 3600, 3816, 3852, 3975, 4240, 4280, 4770, 4815, 5136, 5300, 5350, 5671, 6360, 6420, 7632, 7704, 7950, 8025, 8560, 9540, 9630, 10600, 10700, 11342, 11925, 12720, 12840, 15408, 15900, 16050, 17013, 19080, 19260, 21200, 21400, 22684, 23850, 24075, 25680, 28355, 31800, 32100, 34026, 38160, 38520, 42800, 45368, 47700, 48150, 51039, 56710, 63600, 64200, 68052, 77040, 85065, 90736, 95400, 96300, 102078, 113420, 128400, 136104, 141775, 170130, 190800, 192600, 204156, 226840, 255195, 272208, 283550, 340260, 385200, 408312, 425325, 453680, 510390, 567100, 680520, 816624, 850650, 1020780, 1134200, 1275975, 1361040, 1701300, 2041560, 2268400, 2551950, 3402600, 4083120, 5103900, 6805200, 10207800, 20415600]

約数ペア:

[(1, 20415600), (2, 10207800), (3, 6805200), (4, 5103900), (5, 4083120), (6, 3402600), (8, 2551950), (9, 2268400), (10, 2041560), (12, 1701300), (15, 1361040), (16, 1275975), (18, 1134200), (20, 1020780), (24, 850650), (25, 816624), (30, 680520), (36, 567100), (40, 510390), (45, 453680), (48, 425325), (50, 408312), (53, 385200), (60, 340260), (72, 283550), (75, 272208), (80, 255195), (90, 226840), (100, 204156), (106, 192600), (107, 190800), (120, 170130), (144, 141775), (150, 136104), (159, 128400), (180, 113420), (200, 102078), (212, 96300), (214, 95400), (225, 90736), (240, 85065), (265, 77040), (300, 68052), (318, 64200), (321, 63600), (360, 56710), (400, 51039), (424, 48150), (428, 47700), (450, 45368), (477, 42800), (530, 38520), (535, 38160), (600, 34026), (636, 32100), (642, 31800), (720, 28355), (795, 25680), (848, 24075), (856, 23850), (900, 22684), (954, 21400), (963, 21200), (1060, 19260), (1070, 19080), (1200, 17013), (1272, 16050), (1284, 15900), (1325, 15408), (1590, 12840), (1605, 12720), (1712, 11925), (1800, 11342), (1908, 10700), (1926, 10600), (2120, 9630), (2140, 9540), (2385, 8560), (2544, 8025), (2568, 7950), (2650, 7704), (2675, 7632), (3180, 6420), (3210, 6360), (3600, 5671), (3816, 5350), (3852, 5300), (3975, 5136), (4240, 4815), (4280, 4770)]