21264230

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{8609}}^1$

素因数の和:8648

約数の個数: 32

約数和(自身を含む): 43394400

約数和(自身を除く): 22130170

約数列:

[1, 2, 5, 10, 13, 19, 26, 38, 65, 95, 130, 190, 247, 494, 1235, 2470, 8609, 17218, 43045, 86090, 111917, 163571, 223834, 327142, 559585, 817855, 1119170, 1635710, 2126423, 4252846, 10632115, 21264230]

約数ペア:

[(1, 21264230), (2, 10632115), (5, 4252846), (10, 2126423), (13, 1635710), (19, 1119170), (26, 817855), (38, 559585), (65, 327142), (95, 223834), (130, 163571), (190, 111917), (247, 86090), (494, 43045), (1235, 17218), (2470, 8609)]