18228460

素因数分解:

$2^2\times 5^1\times {\mathrm{79}}^1\times {\mathrm{83}}^1\times {\mathrm{139}}^1$

素因数の和:310

約数の個数: 48

約数和(自身を含む): 39513600

約数和(自身を除く): 21285140

約数列:

[1, 2, 4, 5, 10, 20, 79, 83, 139, 158, 166, 278, 316, 332, 395, 415, 556, 695, 790, 830, 1390, 1580, 1660, 2780, 6557, 10981, 11537, 13114, 21962, 23074, 26228, 32785, 43924, 46148, 54905, 57685, 65570, 109810, 115370, 131140, 219620, 230740, 911423, 1822846, 3645692, 4557115, 9114230, 18228460]

約数ペア:

[(1, 18228460), (2, 9114230), (4, 4557115), (5, 3645692), (10, 1822846), (20, 911423), (79, 230740), (83, 219620), (139, 131140), (158, 115370), (166, 109810), (278, 65570), (316, 57685), (332, 54905), (395, 46148), (415, 43924), (556, 32785), (695, 26228), (790, 23074), (830, 21962), (1390, 13114), (1580, 11537), (1660, 10981), (2780, 6557)]