21000921900

素因数分解:

$2^2\times 3^1\times 5^2\times 7^1\times {\mathrm{10000439}}^1$

素因数の和:10000463

約数の個数: 72

約数和(自身を含む): 69443055360

約数和(自身を除く): 48442133460

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 25, 28, 30, 35, 42, 50, 60, 70, 75, 84, 100, 105, 140, 150, 175, 210, 300, 350, 420, 525, 700, 1050, 2100, 10000439, 20000878, 30001317, 40001756, 50002195, 60002634, 70003073, 100004390, 120005268, 140006146, 150006585, 200008780, 210009219, 250010975, 280012292, 300013170, 350015365, 420018438, 500021950, 600026340, 700030730, 750032925, 840036876, 1000043900, 1050046095, 1400061460, 1500065850, 1750076825, 2100092190, 3000131700, 3500153650, 4200184380, 5250230475, 7000307300, 10500460950, 21000921900]

約数ペア:

[(1, 21000921900), (2, 10500460950), (3, 7000307300), (4, 5250230475), (5, 4200184380), (6, 3500153650), (7, 3000131700), (10, 2100092190), (12, 1750076825), (14, 1500065850), (15, 1400061460), (20, 1050046095), (21, 1000043900), (25, 840036876), (28, 750032925), (30, 700030730), (35, 600026340), (42, 500021950), (50, 420018438), (60, 350015365), (70, 300013170), (75, 280012292), (84, 250010975), (100, 210009219), (105, 200008780), (140, 150006585), (150, 140006146), (175, 120005268), (210, 100004390), (300, 70003073), (350, 60002634), (420, 50002195), (525, 40001756), (700, 30001317), (1050, 20000878), (2100, 10000439)]