21030736

素因数分解:

$2^4\times {\mathrm{821}}^1\times {\mathrm{1601}}^1$

素因数の和:2430

約数の個数: 20

約数和(自身を含む): 40822164

約数和(自身を除く): 19791428

約数列:

[1, 2, 4, 8, 16, 821, 1601, 1642, 3202, 3284, 6404, 6568, 12808, 13136, 25616, 1314421, 2628842, 5257684, 10515368, 21030736]

約数ペア:

[(1, 21030736), (2, 10515368), (4, 5257684), (8, 2628842), (16, 1314421), (821, 25616), (1601, 13136), (1642, 12808), (3202, 6568), (3284, 6404)]