21085725

素因数分解:

$3^1\times 5^2\times {\mathrm{19}}^1\times {\mathrm{14797}}^1$

素因数の和:14829

約数の個数: 24

約数和(自身を含む): 36699040

約数和(自身を除く): 15613315

約数列:

[1, 3, 5, 15, 19, 25, 57, 75, 95, 285, 475, 1425, 14797, 44391, 73985, 221955, 281143, 369925, 843429, 1109775, 1405715, 4217145, 7028575, 21085725]

約数ペア:

[(1, 21085725), (3, 7028575), (5, 4217145), (15, 1405715), (19, 1109775), (25, 843429), (57, 369925), (75, 281143), (95, 221955), (285, 73985), (475, 44391), (1425, 14797)]