18705765

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^2\times {\mathrm{47}}^1\times {\mathrm{157}}^1$

素因数の和:238

約数の個数: 48

約数和(自身を含む): 33308928

約数和(自身を除く): 14603163

約数列:

[1, 3, 5, 13, 15, 39, 47, 65, 141, 157, 169, 195, 235, 471, 507, 611, 705, 785, 845, 1833, 2041, 2355, 2535, 3055, 6123, 7379, 7943, 9165, 10205, 22137, 23829, 26533, 30615, 36895, 39715, 79599, 95927, 110685, 119145, 132665, 287781, 397995, 479635, 1247051, 1438905, 3741153, 6235255, 18705765]

約数ペア:

[(1, 18705765), (3, 6235255), (5, 3741153), (13, 1438905), (15, 1247051), (39, 479635), (47, 397995), (65, 287781), (141, 132665), (157, 119145), (169, 110685), (195, 95927), (235, 79599), (471, 39715), (507, 36895), (611, 30615), (705, 26533), (785, 23829), (845, 22137), (1833, 10205), (2041, 9165), (2355, 7943), (2535, 7379), (3055, 6123)]