81578925

素因数分解:

$3^2\times 5^2\times {\mathrm{53}}^1\times {\mathrm{6841}}^1$

素因数の和:6910

約数の個数: 36

約数和(自身を含む): 148895604

約数和(自身を除く): 67316679

約数列:

[1, 3, 5, 9, 15, 25, 45, 53, 75, 159, 225, 265, 477, 795, 1325, 2385, 3975, 6841, 11925, 20523, 34205, 61569, 102615, 171025, 307845, 362573, 513075, 1087719, 1539225, 1812865, 3263157, 5438595, 9064325, 16315785, 27192975, 81578925]

約数ペア:

[(1, 81578925), (3, 27192975), (5, 16315785), (9, 9064325), (15, 5438595), (25, 3263157), (45, 1812865), (53, 1539225), (75, 1087719), (159, 513075), (225, 362573), (265, 307845), (477, 171025), (795, 102615), (1325, 61569), (2385, 34205), (3975, 20523), (6841, 11925)]