396370340

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{639307}}^1$

素因数の和:639347

約数の個数: 24

約数和(自身を含む): 859229952

約数和(自身を除く): 462859612

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620, 639307, 1278614, 2557228, 3196535, 6393070, 12786140, 19818517, 39637034, 79274068, 99092585, 198185170, 396370340]

約数ペア:

[(1, 396370340), (2, 198185170), (4, 99092585), (5, 79274068), (10, 39637034), (20, 19818517), (31, 12786140), (62, 6393070), (124, 3196535), (155, 2557228), (310, 1278614), (620, 639307)]