21000605776

素因数分解:

$2^4\times {\mathrm{31}}^1\times {\mathrm{42339931}}^1$

素因数の和:42339970

約数の個数: 20

約数和(自身を含む): 42001212544

約数和(自身を除く): 21000606768

約数列:

[1, 2, 4, 8, 16, 31, 62, 124, 248, 496, 42339931, 84679862, 169359724, 338719448, 677438896, 1312537861, 2625075722, 5250151444, 10500302888, 21000605776]

約数ペア:

[(1, 21000605776), (2, 10500302888), (4, 5250151444), (8, 2625075722), (16, 1312537861), (31, 677438896), (62, 338719448), (124, 169359724), (248, 84679862), (496, 42339931)]