20808325

素因数分解:

$5^2\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{617}}^1$

素因数の和:717

約数の個数: 24

約数和(自身を含む): 27587520

約数和(自身を除く): 6779195

約数列:

[1, 5, 19, 25, 71, 95, 355, 475, 617, 1349, 1775, 3085, 6745, 11723, 15425, 33725, 43807, 58615, 219035, 293075, 832333, 1095175, 4161665, 20808325]

約数ペア:

[(1, 20808325), (5, 4161665), (19, 1095175), (25, 832333), (71, 293075), (95, 219035), (355, 58615), (475, 43807), (617, 33725), (1349, 15425), (1775, 11723), (3085, 6745)]