21890178

素因数分解:

$2^1\times 3^2\times {\mathrm{103}}^1\times {\mathrm{11807}}^1$

素因数の和:11918

約数の個数: 24

約数和(自身を含む): 47893248

約数和(自身を除く): 26003070

約数列:

[1, 2, 3, 6, 9, 18, 103, 206, 309, 618, 927, 1854, 11807, 23614, 35421, 70842, 106263, 212526, 1216121, 2432242, 3648363, 7296726, 10945089, 21890178]

約数ペア:

[(1, 21890178), (2, 10945089), (3, 7296726), (6, 3648363), (9, 2432242), (18, 1216121), (103, 212526), (206, 106263), (309, 70842), (618, 35421), (927, 23614), (1854, 11807)]