72257225

素因数分解:

$5^2\times {\mathrm{17}}^2\times {\mathrm{73}}^1\times {\mathrm{137}}^1$

素因数の和:254

約数の個数: 36

約数和(自身を含む): 97187604

約数和(自身を除く): 24930379

約数列:

[1, 5, 17, 25, 73, 85, 137, 289, 365, 425, 685, 1241, 1445, 1825, 2329, 3425, 6205, 7225, 10001, 11645, 21097, 31025, 39593, 50005, 58225, 105485, 170017, 197965, 250025, 527425, 850085, 989825, 2890289, 4250425, 14451445, 72257225]

約数ペア:

[(1, 72257225), (5, 14451445), (17, 4250425), (25, 2890289), (73, 989825), (85, 850085), (137, 527425), (289, 250025), (365, 197965), (425, 170017), (685, 105485), (1241, 58225), (1445, 50005), (1825, 39593), (2329, 31025), (3425, 21097), (6205, 11645), (7225, 10001)]