21240575

素因数分解:

$5^2\times {\mathrm{19}}^1\times {\mathrm{97}}^1\times {\mathrm{461}}^1$

素因数の和:587

約数の個数: 24

約数和(自身を含む): 28071120

約数和(自身を除く): 6830545

約数列:

[1, 5, 19, 25, 95, 97, 461, 475, 485, 1843, 2305, 2425, 8759, 9215, 11525, 43795, 44717, 46075, 218975, 223585, 849623, 1117925, 4248115, 21240575]

約数ペア:

[(1, 21240575), (5, 4248115), (19, 1117925), (25, 849623), (95, 223585), (97, 218975), (461, 46075), (475, 44717), (485, 43795), (1843, 11525), (2305, 9215), (2425, 8759)]