64975780

素因数分解:

$2^2\times 5^1\times {\mathrm{1451}}^1\times {\mathrm{2239}}^1$

素因数の和:3699

約数の個数: 24

約数和(自身を含む): 136604160

約数和(自身を除く): 71628380

約数列:

[1, 2, 4, 5, 10, 20, 1451, 2239, 2902, 4478, 5804, 7255, 8956, 11195, 14510, 22390, 29020, 44780, 3248789, 6497578, 12995156, 16243945, 32487890, 64975780]

約数ペア:

[(1, 64975780), (2, 32487890), (4, 16243945), (5, 12995156), (10, 6497578), (20, 3248789), (1451, 44780), (2239, 29020), (2902, 22390), (4478, 14510), (5804, 11195), (7255, 8956)]