21237080

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{31231}}^1$

素因数の和:31259

約数の個数: 32

約数和(自身を含む): 50595840

約数和(自身を除く): 29358760

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 170, 340, 680, 31231, 62462, 124924, 156155, 249848, 312310, 530927, 624620, 1061854, 1249240, 2123708, 2654635, 4247416, 5309270, 10618540, 21237080]

約数ペア:

[(1, 21237080), (2, 10618540), (4, 5309270), (5, 4247416), (8, 2654635), (10, 2123708), (17, 1249240), (20, 1061854), (34, 624620), (40, 530927), (68, 312310), (85, 249848), (136, 156155), (170, 124924), (340, 62462), (680, 31231)]