21348025

素因数分解:

$5^2\times {\mathrm{23}}^1\times {\mathrm{137}}^1\times {\mathrm{271}}^1$

素因数の和:441

約数の個数: 24

約数和(自身を含む): 27926784

約数和(自身を除く): 6578759

約数列:

[1, 5, 23, 25, 115, 137, 271, 575, 685, 1355, 3151, 3425, 6233, 6775, 15755, 31165, 37127, 78775, 155825, 185635, 853921, 928175, 4269605, 21348025]

約数ペア:

[(1, 21348025), (5, 4269605), (23, 928175), (25, 853921), (115, 185635), (137, 155825), (271, 78775), (575, 37127), (685, 31165), (1355, 15755), (3151, 6775), (3425, 6233)]