39896680

素因数分解:

$2^3\times 5^1\times {\mathrm{257}}^1\times {\mathrm{3881}}^1$

素因数の和:4149

約数の個数: 32

約数和(自身を含む): 90140040

約数和(自身を除く): 50243360

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 257, 514, 1028, 1285, 2056, 2570, 3881, 5140, 7762, 10280, 15524, 19405, 31048, 38810, 77620, 155240, 997417, 1994834, 3989668, 4987085, 7979336, 9974170, 19948340, 39896680]

約数ペア:

[(1, 39896680), (2, 19948340), (4, 9974170), (5, 7979336), (8, 4987085), (10, 3989668), (20, 1994834), (40, 997417), (257, 155240), (514, 77620), (1028, 38810), (1285, 31048), (2056, 19405), (2570, 15524), (3881, 10280), (5140, 7762)]