21000547743

素因数分解:

$3^1\times 7^2\times {\mathrm{491}}^1\times {\mathrm{290959}}^1$

素因数の和:291467

約数の個数: 24

約数和(自身を含む): 32638728960

約数和(自身を除く): 11638181217

約数列:

[1, 3, 7, 21, 49, 147, 491, 1473, 3437, 10311, 24059, 72177, 290959, 872877, 2036713, 6110139, 14256991, 42770973, 142860869, 428582607, 1000026083, 3000078249, 7000182581, 21000547743]

約数ペア:

[(1, 21000547743), (3, 7000182581), (7, 3000078249), (21, 1000026083), (49, 428582607), (147, 142860869), (491, 42770973), (1473, 14256991), (3437, 6110139), (10311, 2036713), (24059, 872877), (72177, 290959)]