81256875

素因数分解:

$3^1\times 5^4\times 7^1\times {\mathrm{41}}^1\times {\mathrm{151}}^1$

素因数の和:222

約数の個数: 80

約数和(自身を含む): 159548928

約数和(自身を除く): 78292053

約数列:

[1, 3, 5, 7, 15, 21, 25, 35, 41, 75, 105, 123, 125, 151, 175, 205, 287, 375, 453, 525, 615, 625, 755, 861, 875, 1025, 1057, 1435, 1875, 2265, 2625, 3075, 3171, 3775, 4305, 4375, 5125, 5285, 6191, 7175, 11325, 13125, 15375, 15855, 18573, 18875, 21525, 25625, 26425, 30955, 35875, 43337, 56625, 76875, 79275, 92865, 94375, 107625, 130011, 132125, 154775, 179375, 216685, 283125, 396375, 464325, 538125, 650055, 660625, 773875, 1083425, 1981875, 2321625, 3250275, 3869375, 5417125, 11608125, 16251375, 27085625, 81256875]

約数ペア:

[(1, 81256875), (3, 27085625), (5, 16251375), (7, 11608125), (15, 5417125), (21, 3869375), (25, 3250275), (35, 2321625), (41, 1981875), (75, 1083425), (105, 773875), (123, 660625), (125, 650055), (151, 538125), (175, 464325), (205, 396375), (287, 283125), (375, 216685), (453, 179375), (525, 154775), (615, 132125), (625, 130011), (755, 107625), (861, 94375), (875, 92865), (1025, 79275), (1057, 76875), (1435, 56625), (1875, 43337), (2265, 35875), (2625, 30955), (3075, 26425), (3171, 25625), (3775, 21525), (4305, 18875), (4375, 18573), (5125, 15855), (5285, 15375), (6191, 13125), (7175, 11325)]