20159157081

素因数分解:

$3^1\times 7^2\times {\mathrm{631}}^1\times {\mathrm{217333}}^1$

素因数の和:217981

約数の個数: 24

約数和(自身を含む): 31316960064

約数和(自身を除く): 11157802983

約数列:

[1, 3, 7, 21, 49, 147, 631, 1893, 4417, 13251, 30919, 92757, 217333, 651999, 1521331, 4563993, 10649317, 31947951, 137137123, 411411369, 959959861, 2879879583, 6719719027, 20159157081]

約数ペア:

[(1, 20159157081), (3, 6719719027), (7, 2879879583), (21, 959959861), (49, 411411369), (147, 137137123), (631, 31947951), (1893, 10649317), (4417, 4563993), (13251, 1521331), (30919, 651999), (92757, 217333)]