398465008

素因数分解:

$2^4\times {\mathrm{997}}^1\times {\mathrm{24979}}^1$

素因数の和:25984

約数の個数: 20

約数和(自身を含む): 772831240

約数和(自身を除く): 374366232

約数列:

[1, 2, 4, 8, 16, 997, 1994, 3988, 7976, 15952, 24979, 49958, 99916, 199832, 399664, 24904063, 49808126, 99616252, 199232504, 398465008]

約数ペア:

[(1, 398465008), (2, 199232504), (4, 99616252), (8, 49808126), (16, 24904063), (997, 399664), (1994, 199832), (3988, 99916), (7976, 49958), (15952, 24979)]