397765640

素因数分解:

$2^3\times 5^1\times {\mathrm{163}}^1\times {\mathrm{61007}}^1$

素因数の和:61181

約数の個数: 32

約数和(自身を含む): 900478080

約数和(自身を除く): 502712440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 163, 326, 652, 815, 1304, 1630, 3260, 6520, 61007, 122014, 244028, 305035, 488056, 610070, 1220140, 2440280, 9944141, 19888282, 39776564, 49720705, 79553128, 99441410, 198882820, 397765640]

約数ペア:

[(1, 397765640), (2, 198882820), (4, 99441410), (5, 79553128), (8, 49720705), (10, 39776564), (20, 19888282), (40, 9944141), (163, 2440280), (326, 1220140), (652, 610070), (815, 488056), (1304, 305035), (1630, 244028), (3260, 122014), (6520, 61007)]