21204378

素因数分解:

$2^1\times 3^2\times {\mathrm{13}}^1\times {\mathrm{90617}}^1$

素因数の和:90638

約数の個数: 24

約数和(自身を含む): 49477428

約数和(自身を除く): 28273050

約数列:

[1, 2, 3, 6, 9, 13, 18, 26, 39, 78, 117, 234, 90617, 181234, 271851, 543702, 815553, 1178021, 1631106, 2356042, 3534063, 7068126, 10602189, 21204378]

約数ペア:

[(1, 21204378), (2, 10602189), (3, 7068126), (6, 3534063), (9, 2356042), (13, 1631106), (18, 1178021), (26, 815553), (39, 543702), (78, 271851), (117, 181234), (234, 90617)]