21085935

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{1523}}^1$

素因数の和:1615

約数の個数: 32

約数和(自身を含む): 36868608

約数和(自身を除く): 15782673

約数列:

[1, 3, 5, 13, 15, 39, 65, 71, 195, 213, 355, 923, 1065, 1523, 2769, 4569, 4615, 7615, 13845, 19799, 22845, 59397, 98995, 108133, 296985, 324399, 540665, 1405729, 1621995, 4217187, 7028645, 21085935]

約数ペア:

[(1, 21085935), (3, 7028645), (5, 4217187), (13, 1621995), (15, 1405729), (39, 540665), (65, 324399), (71, 296985), (195, 108133), (213, 98995), (355, 59397), (923, 22845), (1065, 19799), (1523, 13845), (2769, 7615), (4569, 4615)]