389440

素因数分解:

$2^6\times 5^1\times {\mathrm{1217}}^1$

素因数の和:1234

約数の個数: 28

約数和(自身を含む): 928116

約数和(自身を除く): 538676

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 1217, 2434, 4868, 6085, 9736, 12170, 19472, 24340, 38944, 48680, 77888, 97360, 194720, 389440]

約数ペア:

[(1, 389440), (2, 194720), (4, 97360), (5, 77888), (8, 48680), (10, 38944), (16, 24340), (20, 19472), (32, 12170), (40, 9736), (64, 6085), (80, 4868), (160, 2434), (320, 1217)]