18791660

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{73}}^1\times {\mathrm{211}}^1$

素因数の和:354

約数の個数: 48

約数和(自身を含む): 40851552

約数和(自身を除く): 22059892

約数列:

[1, 2, 4, 5, 10, 20, 61, 73, 122, 146, 211, 244, 292, 305, 365, 422, 610, 730, 844, 1055, 1220, 1460, 2110, 4220, 4453, 8906, 12871, 15403, 17812, 22265, 25742, 30806, 44530, 51484, 61612, 64355, 77015, 89060, 128710, 154030, 257420, 308060, 939583, 1879166, 3758332, 4697915, 9395830, 18791660]

約数ペア:

[(1, 18791660), (2, 9395830), (4, 4697915), (5, 3758332), (10, 1879166), (20, 939583), (61, 308060), (73, 257420), (122, 154030), (146, 128710), (211, 89060), (244, 77015), (292, 64355), (305, 61612), (365, 51484), (422, 44530), (610, 30806), (730, 25742), (844, 22265), (1055, 17812), (1220, 15403), (1460, 12871), (2110, 8906), (4220, 4453)]