20692640

素因数分解:

$2^5\times 5^1\times {\mathrm{23}}^1\times {\mathrm{5623}}^1$

素因数の和:5661

約数の個数: 48

約数和(自身を含む): 51020928

約数和(自身を除く): 30328288

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 32, 40, 46, 80, 92, 115, 160, 184, 230, 368, 460, 736, 920, 1840, 3680, 5623, 11246, 22492, 28115, 44984, 56230, 89968, 112460, 129329, 179936, 224920, 258658, 449840, 517316, 646645, 899680, 1034632, 1293290, 2069264, 2586580, 4138528, 5173160, 10346320, 20692640]

約数ペア:

[(1, 20692640), (2, 10346320), (4, 5173160), (5, 4138528), (8, 2586580), (10, 2069264), (16, 1293290), (20, 1034632), (23, 899680), (32, 646645), (40, 517316), (46, 449840), (80, 258658), (92, 224920), (115, 179936), (160, 129329), (184, 112460), (230, 89968), (368, 56230), (460, 44984), (736, 28115), (920, 22492), (1840, 11246), (3680, 5623)]