221754625

素因数分解:

$5^3\times {\mathrm{31}}^1\times {\mathrm{89}}^1\times {\mathrm{643}}^1$

素因数の和:778

約数の個数: 32

約数和(自身を含む): 289336320

約数和(自身を除く): 67581695

約数列:

[1, 5, 25, 31, 89, 125, 155, 445, 643, 775, 2225, 2759, 3215, 3875, 11125, 13795, 16075, 19933, 57227, 68975, 80375, 99665, 286135, 344875, 498325, 1430675, 1774037, 2491625, 7153375, 8870185, 44350925, 221754625]

約数ペア:

[(1, 221754625), (5, 44350925), (25, 8870185), (31, 7153375), (89, 2491625), (125, 1774037), (155, 1430675), (445, 498325), (643, 344875), (775, 286135), (2225, 99665), (2759, 80375), (3215, 68975), (3875, 57227), (11125, 19933), (13795, 16075)]