21337460

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^2\times {\mathrm{577}}^1$

素因数の和:672

約数の個数: 36

約数和(自身を含む): 45954468

約数和(自身を除く): 24617008

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 172, 215, 430, 577, 860, 1154, 1849, 2308, 2885, 3698, 5770, 7396, 9245, 11540, 18490, 24811, 36980, 49622, 99244, 124055, 248110, 496220, 1066873, 2133746, 4267492, 5334365, 10668730, 21337460]

約数ペア:

[(1, 21337460), (2, 10668730), (4, 5334365), (5, 4267492), (10, 2133746), (20, 1066873), (43, 496220), (86, 248110), (172, 124055), (215, 99244), (430, 49622), (577, 36980), (860, 24811), (1154, 18490), (1849, 11540), (2308, 9245), (2885, 7396), (3698, 5770)]