81040880

素因数分解:

$2^4\times 5^1\times {\mathrm{211}}^1\times {\mathrm{4801}}^1$

素因数の和:5025

約数の個数: 40

約数和(自身を含む): 189352464

約数和(自身を除く): 108311584

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 211, 422, 844, 1055, 1688, 2110, 3376, 4220, 4801, 8440, 9602, 16880, 19204, 24005, 38408, 48010, 76816, 96020, 192040, 384080, 1013011, 2026022, 4052044, 5065055, 8104088, 10130110, 16208176, 20260220, 40520440, 81040880]

約数ペア:

[(1, 81040880), (2, 40520440), (4, 20260220), (5, 16208176), (8, 10130110), (10, 8104088), (16, 5065055), (20, 4052044), (40, 2026022), (80, 1013011), (211, 384080), (422, 192040), (844, 96020), (1055, 76816), (1688, 48010), (2110, 38408), (3376, 24005), (4220, 19204), (4801, 16880), (8440, 9602)]