1621900

素因数分解:

$2^2\times 5^2\times 7^2\times {\mathrm{331}}^1$

素因数の和:359

約数の個数: 54

約数和(自身を含む): 4106508

約数和(自身を除く): 2484608

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 25, 28, 35, 49, 50, 70, 98, 100, 140, 175, 196, 245, 331, 350, 490, 662, 700, 980, 1225, 1324, 1655, 2317, 2450, 3310, 4634, 4900, 6620, 8275, 9268, 11585, 16219, 16550, 23170, 32438, 33100, 46340, 57925, 64876, 81095, 115850, 162190, 231700, 324380, 405475, 810950, 1621900]

約数ペア:

[(1, 1621900), (2, 810950), (4, 405475), (5, 324380), (7, 231700), (10, 162190), (14, 115850), (20, 81095), (25, 64876), (28, 57925), (35, 46340), (49, 33100), (50, 32438), (70, 23170), (98, 16550), (100, 16219), (140, 11585), (175, 9268), (196, 8275), (245, 6620), (331, 4900), (350, 4634), (490, 3310), (662, 2450), (700, 2317), (980, 1655), (1225, 1324)]