20351920

素因数分解:

$2^4\times 5^1\times {\mathrm{67}}^1\times {\mathrm{3797}}^1$

素因数の和:3877

約数の個数: 40

約数和(自身を含む): 48037104

約数和(自身を除く): 27685184

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 67, 80, 134, 268, 335, 536, 670, 1072, 1340, 2680, 3797, 5360, 7594, 15188, 18985, 30376, 37970, 60752, 75940, 151880, 254399, 303760, 508798, 1017596, 1271995, 2035192, 2543990, 4070384, 5087980, 10175960, 20351920]

約数ペア:

[(1, 20351920), (2, 10175960), (4, 5087980), (5, 4070384), (8, 2543990), (10, 2035192), (16, 1271995), (20, 1017596), (40, 508798), (67, 303760), (80, 254399), (134, 151880), (268, 75940), (335, 60752), (536, 37970), (670, 30376), (1072, 18985), (1340, 15188), (2680, 7594), (3797, 5360)]