64028980

素因数分解:

$2^2\times 5^1\times {\mathrm{257}}^1\times {\mathrm{12457}}^1$

素因数の和:12723

約数の個数: 24

約数和(自身を含む): 134994888

約数和(自身を除く): 70965908

約数列:

[1, 2, 4, 5, 10, 20, 257, 514, 1028, 1285, 2570, 5140, 12457, 24914, 49828, 62285, 124570, 249140, 3201449, 6402898, 12805796, 16007245, 32014490, 64028980]

約数ペア:

[(1, 64028980), (2, 32014490), (4, 16007245), (5, 12805796), (10, 6402898), (20, 3201449), (257, 249140), (514, 124570), (1028, 62285), (1285, 49828), (2570, 24914), (5140, 12457)]