18052880

素因数分解:

$2^4\times 5^1\times {\mathrm{113}}^1\times {\mathrm{1997}}^1$

素因数の和:2123

約数の個数: 40

約数和(自身を含む): 42365592

約数和(自身を除く): 24312712

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 113, 226, 452, 565, 904, 1130, 1808, 1997, 2260, 3994, 4520, 7988, 9040, 9985, 15976, 19970, 31952, 39940, 79880, 159760, 225661, 451322, 902644, 1128305, 1805288, 2256610, 3610576, 4513220, 9026440, 18052880]

約数ペア:

[(1, 18052880), (2, 9026440), (4, 4513220), (5, 3610576), (8, 2256610), (10, 1805288), (16, 1128305), (20, 902644), (40, 451322), (80, 225661), (113, 159760), (226, 79880), (452, 39940), (565, 31952), (904, 19970), (1130, 15976), (1808, 9985), (1997, 9040), (2260, 7988), (3994, 4520)]