641534980

素因数分解:

$2^2\times 5^1\times {\mathrm{1439}}^1\times {\mathrm{22291}}^1$

素因数の和:23739

約数の個数: 24

約数和(自身を含む): 1348220160

約数和(自身を除く): 706685180

約数列:

[1, 2, 4, 5, 10, 20, 1439, 2878, 5756, 7195, 14390, 22291, 28780, 44582, 89164, 111455, 222910, 445820, 32076749, 64153498, 128306996, 160383745, 320767490, 641534980]

約数ペア:

[(1, 641534980), (2, 320767490), (4, 160383745), (5, 128306996), (10, 64153498), (20, 32076749), (1439, 445820), (2878, 222910), (5756, 111455), (7195, 89164), (14390, 44582), (22291, 28780)]