81900

素因数分解:

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

素因数の和:40

約数の個数: 108

約数和(自身を含む): 315952

約数和(自身を除く): 234052

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 13, 14, 15, 18, 20, 21, 25, 26, 28, 30, 35, 36, 39, 42, 45, 50, 52, 60, 63, 65, 70, 75, 78, 84, 90, 91, 100, 105, 117, 126, 130, 140, 150, 156, 175, 180, 182, 195, 210, 225, 234, 252, 260, 273, 300, 315, 325, 350, 364, 390, 420, 450, 455, 468, 525, 546, 585, 630, 650, 700, 780, 819, 900, 910, 975, 1050, 1092, 1170, 1260, 1300, 1365, 1575, 1638, 1820, 1950, 2100, 2275, 2340, 2730, 2925, 3150, 3276, 3900, 4095, 4550, 5460, 5850, 6300, 6825, 8190, 9100, 11700, 13650, 16380, 20475, 27300, 40950, 81900]

約数ペア:

[(1, 81900), (2, 40950), (3, 27300), (4, 20475), (5, 16380), (6, 13650), (7, 11700), (9, 9100), (10, 8190), (12, 6825), (13, 6300), (14, 5850), (15, 5460), (18, 4550), (20, 4095), (21, 3900), (25, 3276), (26, 3150), (28, 2925), (30, 2730), (35, 2340), (36, 2275), (39, 2100), (42, 1950), (45, 1820), (50, 1638), (52, 1575), (60, 1365), (63, 1300), (65, 1260), (70, 1170), (75, 1092), (78, 1050), (84, 975), (90, 910), (91, 900), (100, 819), (105, 780), (117, 700), (126, 650), (130, 630), (140, 585), (150, 546), (156, 525), (175, 468), (180, 455), (182, 450), (195, 420), (210, 390), (225, 364), (234, 350), (252, 325), (260, 315), (273, 300)]