81279025

素因数分解:

$5^2\times {\mathrm{29}}^1\times {\mathrm{71}}^1\times {\mathrm{1579}}^1$

素因数の和:1689

約数の個数: 24

約数和(自身を含む): 105796800

約数和(自身を除く): 24517775

約数列:

[1, 5, 25, 29, 71, 145, 355, 725, 1579, 1775, 2059, 7895, 10295, 39475, 45791, 51475, 112109, 228955, 560545, 1144775, 2802725, 3251161, 16255805, 81279025]

約数ペア:

[(1, 81279025), (5, 16255805), (25, 3251161), (29, 2802725), (71, 1144775), (145, 560545), (355, 228955), (725, 112109), (1579, 51475), (1775, 45791), (2059, 39475), (7895, 10295)]