128951785

素因数分解:

$5^1\times {\mathrm{31}}^2\times {\mathrm{47}}^1\times {\mathrm{571}}^1$

素因数の和:685

約数の個数: 24

約数和(自身を含む): 163582848

約数和(自身を除く): 34631063

約数列:

[1, 5, 31, 47, 155, 235, 571, 961, 1457, 2855, 4805, 7285, 17701, 26837, 45167, 88505, 134185, 225835, 548731, 831947, 2743655, 4159735, 25790357, 128951785]

約数ペア:

[(1, 128951785), (5, 25790357), (31, 4159735), (47, 2743655), (155, 831947), (235, 548731), (571, 225835), (961, 134185), (1457, 88505), (2855, 45167), (4805, 26837), (7285, 17701)]