18636693520

素因数分解:

$2^4\times 5^1\times {\mathrm{149}}^1\times {\mathrm{1563481}}^1$

素因数の和:1563643

約数の個数: 40

約数和(自身を含む): 43621147800

約数和(自身を除く): 24984454280

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 149, 298, 596, 745, 1192, 1490, 2384, 2980, 5960, 11920, 1563481, 3126962, 6253924, 7817405, 12507848, 15634810, 25015696, 31269620, 62539240, 125078480, 232958669, 465917338, 931834676, 1164793345, 1863669352, 2329586690, 3727338704, 4659173380, 9318346760, 18636693520]

約数ペア:

[(1, 18636693520), (2, 9318346760), (4, 4659173380), (5, 3727338704), (8, 2329586690), (10, 1863669352), (16, 1164793345), (20, 931834676), (40, 465917338), (80, 232958669), (149, 125078480), (298, 62539240), (596, 31269620), (745, 25015696), (1192, 15634810), (1490, 12507848), (2384, 7817405), (2980, 6253924), (5960, 3126962), (11920, 1563481)]