21523125

素因数分解:

$3^1\times 5^4\times {\mathrm{13}}^1\times {\mathrm{883}}^1$

素因数の和:919

約数の個数: 40

約数和(自身を含む): 38662624

約数和(自身を除く): 17139499

約数列:

[1, 3, 5, 13, 15, 25, 39, 65, 75, 125, 195, 325, 375, 625, 883, 975, 1625, 1875, 2649, 4415, 4875, 8125, 11479, 13245, 22075, 24375, 34437, 57395, 66225, 110375, 172185, 286975, 331125, 551875, 860925, 1434875, 1655625, 4304625, 7174375, 21523125]

約数ペア:

[(1, 21523125), (3, 7174375), (5, 4304625), (13, 1655625), (15, 1434875), (25, 860925), (39, 551875), (65, 331125), (75, 286975), (125, 172185), (195, 110375), (325, 66225), (375, 57395), (625, 34437), (883, 24375), (975, 22075), (1625, 13245), (1875, 11479), (2649, 8125), (4415, 4875)]