4281875

素因数分解:

$5^4\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1$

素因数の和:81

約数の個数: 40

約数和(自身を含む): 6297984

約数和(自身を除く): 2016109

約数列:

[1, 5, 13, 17, 25, 31, 65, 85, 125, 155, 221, 325, 403, 425, 527, 625, 775, 1105, 1625, 2015, 2125, 2635, 3875, 5525, 6851, 8125, 10075, 10625, 13175, 19375, 27625, 34255, 50375, 65875, 138125, 171275, 251875, 329375, 856375, 4281875]

約数ペア:

[(1, 4281875), (5, 856375), (13, 329375), (17, 251875), (25, 171275), (31, 138125), (65, 65875), (85, 50375), (125, 34255), (155, 27625), (221, 19375), (325, 13175), (403, 10625), (425, 10075), (527, 8125), (625, 6851), (775, 5525), (1105, 3875), (1625, 2635), (2015, 2125)]