21257025

素因数分解:

$3^1\times 5^2\times {\mathrm{151}}^1\times {\mathrm{1877}}^1$

素因数の和:2041

約数の個数: 24

約数和(自身を含む): 35396544

約数和(自身を除く): 14139519

約数列:

[1, 3, 5, 15, 25, 75, 151, 453, 755, 1877, 2265, 3775, 5631, 9385, 11325, 28155, 46925, 140775, 283427, 850281, 1417135, 4251405, 7085675, 21257025]

約数ペア:

[(1, 21257025), (3, 7085675), (5, 4251405), (15, 1417135), (25, 850281), (75, 283427), (151, 140775), (453, 46925), (755, 28155), (1877, 11325), (2265, 9385), (3775, 5631)]