18985616

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{97}}^1\times {\mathrm{941}}^1$

素因数の和:1059

約数の個数: 40

約数和(自身を含む): 40065144

約数和(自身を除く): 21079528

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 97, 104, 194, 208, 388, 776, 941, 1261, 1552, 1882, 2522, 3764, 5044, 7528, 10088, 12233, 15056, 20176, 24466, 48932, 91277, 97864, 182554, 195728, 365108, 730216, 1186601, 1460432, 2373202, 4746404, 9492808, 18985616]

約数ペア:

[(1, 18985616), (2, 9492808), (4, 4746404), (8, 2373202), (13, 1460432), (16, 1186601), (26, 730216), (52, 365108), (97, 195728), (104, 182554), (194, 97864), (208, 91277), (388, 48932), (776, 24466), (941, 20176), (1261, 15056), (1552, 12233), (1882, 10088), (2522, 7528), (3764, 5044)]