139221640

素因数分解:

$2^3\times 5^1\times {\mathrm{1307}}^1\times {\mathrm{2663}}^1$

素因数の和:3981

約数の個数: 32

約数和(自身を含む): 313606080

約数和(自身を除く): 174384440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1307, 2614, 2663, 5228, 5326, 6535, 10456, 10652, 13070, 13315, 21304, 26140, 26630, 52280, 53260, 106520, 3480541, 6961082, 13922164, 17402705, 27844328, 34805410, 69610820, 139221640]

約数ペア:

[(1, 139221640), (2, 69610820), (4, 34805410), (5, 27844328), (8, 17402705), (10, 13922164), (20, 6961082), (40, 3480541), (1307, 106520), (2614, 53260), (2663, 52280), (5228, 26630), (5326, 26140), (6535, 21304), (10456, 13315), (10652, 13070)]