660220125

素因数分解:

$3^1\times 5^3\times {\mathrm{71}}^1\times {\mathrm{137}}^1\times {\mathrm{181}}^1$

素因数の和:407

約数の個数: 64

約数和(自身を含む): 1128411648

約数和(自身を除く): 468191523

約数列:

[1, 3, 5, 15, 25, 71, 75, 125, 137, 181, 213, 355, 375, 411, 543, 685, 905, 1065, 1775, 2055, 2715, 3425, 4525, 5325, 8875, 9727, 10275, 12851, 13575, 17125, 22625, 24797, 26625, 29181, 38553, 48635, 51375, 64255, 67875, 74391, 123985, 145905, 192765, 243175, 321275, 371955, 619925, 729525, 963825, 1215875, 1606375, 1760587, 1859775, 3099625, 3647625, 4819125, 5281761, 8802935, 9298875, 26408805, 44014675, 132044025, 220073375, 660220125]

約数ペア:

[(1, 660220125), (3, 220073375), (5, 132044025), (15, 44014675), (25, 26408805), (71, 9298875), (75, 8802935), (125, 5281761), (137, 4819125), (181, 3647625), (213, 3099625), (355, 1859775), (375, 1760587), (411, 1606375), (543, 1215875), (685, 963825), (905, 729525), (1065, 619925), (1775, 371955), (2055, 321275), (2715, 243175), (3425, 192765), (4525, 145905), (5325, 123985), (8875, 74391), (9727, 67875), (10275, 64255), (12851, 51375), (13575, 48635), (17125, 38553), (22625, 29181), (24797, 26625)]