21685125

素因数分解:

$3^1\times 5^3\times 7^1\times {\mathrm{11}}^1\times {\mathrm{751}}^1$

素因数の和:787

約数の個数: 64

約数和(自身を含む): 45047808

約数和(自身を除く): 23362683

約数列:

[1, 3, 5, 7, 11, 15, 21, 25, 33, 35, 55, 75, 77, 105, 125, 165, 175, 231, 275, 375, 385, 525, 751, 825, 875, 1155, 1375, 1925, 2253, 2625, 3755, 4125, 5257, 5775, 8261, 9625, 11265, 15771, 18775, 24783, 26285, 28875, 41305, 56325, 57827, 78855, 93875, 123915, 131425, 173481, 206525, 281625, 289135, 394275, 619575, 657125, 867405, 1032625, 1445675, 1971375, 3097875, 4337025, 7228375, 21685125]

約数ペア:

[(1, 21685125), (3, 7228375), (5, 4337025), (7, 3097875), (11, 1971375), (15, 1445675), (21, 1032625), (25, 867405), (33, 657125), (35, 619575), (55, 394275), (75, 289135), (77, 281625), (105, 206525), (125, 173481), (165, 131425), (175, 123915), (231, 93875), (275, 78855), (375, 57827), (385, 56325), (525, 41305), (751, 28875), (825, 26285), (875, 24783), (1155, 18775), (1375, 15771), (1925, 11265), (2253, 9625), (2625, 8261), (3755, 5775), (4125, 5257)]