1990234625

素因数分解:

$5^3\times {\mathrm{17}}^2\times {\mathrm{37}}^1\times {\mathrm{1489}}^1$

素因数の和:1575

約数の個数: 48

約数和(自身を含む): 2711645040

約数和(自身を除く): 721410415

約数列:

[1, 5, 17, 25, 37, 85, 125, 185, 289, 425, 629, 925, 1445, 1489, 2125, 3145, 4625, 7225, 7445, 10693, 15725, 25313, 36125, 37225, 53465, 55093, 78625, 126565, 186125, 267325, 275465, 430321, 632825, 936581, 1336625, 1377325, 2151605, 3164125, 4682905, 6886625, 10758025, 15921877, 23414525, 53790125, 79609385, 117072625, 398046925, 1990234625]

約数ペア:

[(1, 1990234625), (5, 398046925), (17, 117072625), (25, 79609385), (37, 53790125), (85, 23414525), (125, 15921877), (185, 10758025), (289, 6886625), (425, 4682905), (629, 3164125), (925, 2151605), (1445, 1377325), (1489, 1336625), (2125, 936581), (3145, 632825), (4625, 430321), (7225, 275465), (7445, 267325), (10693, 186125), (15725, 126565), (25313, 78625), (36125, 55093), (37225, 53465)]