21896145

素因数分解:

$3^2\times 5^1\times {\mathrm{491}}^1\times {\mathrm{991}}^1$

素因数の和:1493

約数の個数: 24

約数和(自身を含む): 38068992

約数和(自身を除く): 16172847

約数列:

[1, 3, 5, 9, 15, 45, 491, 991, 1473, 2455, 2973, 4419, 4955, 7365, 8919, 14865, 22095, 44595, 486581, 1459743, 2432905, 4379229, 7298715, 21896145]

約数ペア:

[(1, 21896145), (3, 7298715), (5, 4379229), (9, 2432905), (15, 1459743), (45, 486581), (491, 44595), (991, 22095), (1473, 14865), (2455, 8919), (2973, 7365), (4419, 4955)]