18108380

素因数分解:

$2^2\times 5^1\times {\mathrm{73}}^1\times {\mathrm{79}}^1\times {\mathrm{157}}^1$

素因数の和:318

約数の個数: 48

約数和(自身を含む): 39285120

約数和(自身を除く): 21176740

約数列:

[1, 2, 4, 5, 10, 20, 73, 79, 146, 157, 158, 292, 314, 316, 365, 395, 628, 730, 785, 790, 1460, 1570, 1580, 3140, 5767, 11461, 11534, 12403, 22922, 23068, 24806, 28835, 45844, 49612, 57305, 57670, 62015, 114610, 115340, 124030, 229220, 248060, 905419, 1810838, 3621676, 4527095, 9054190, 18108380]

約数ペア:

[(1, 18108380), (2, 9054190), (4, 4527095), (5, 3621676), (10, 1810838), (20, 905419), (73, 248060), (79, 229220), (146, 124030), (157, 115340), (158, 114610), (292, 62015), (314, 57670), (316, 57305), (365, 49612), (395, 45844), (628, 28835), (730, 24806), (785, 23068), (790, 22922), (1460, 12403), (1570, 11534), (1580, 11461), (3140, 5767)]