258715821

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{22039}}^1$

素因数の和:22105

約数の個数: 32

約数和(自身を含む): 434452480

約数和(自身を除く): 175736659

約数列:

[1, 3, 7, 13, 21, 39, 43, 91, 129, 273, 301, 559, 903, 1677, 3913, 11739, 22039, 66117, 154273, 286507, 462819, 859521, 947677, 2005549, 2843031, 6016647, 6633739, 12319801, 19901217, 36959403, 86238607, 258715821]

約数ペア:

[(1, 258715821), (3, 86238607), (7, 36959403), (13, 19901217), (21, 12319801), (39, 6633739), (43, 6016647), (91, 2843031), (129, 2005549), (273, 947677), (301, 859521), (559, 462819), (903, 286507), (1677, 154273), (3913, 66117), (11739, 22039)]