19028620

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{163}}^1\times {\mathrm{449}}^1$

素因数の和:634

約数の個数: 48

約数和(自身を含む): 43394400

約数和(自身を除く): 24365780

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 163, 260, 326, 449, 652, 815, 898, 1630, 1796, 2119, 2245, 3260, 4238, 4490, 5837, 8476, 8980, 10595, 11674, 21190, 23348, 29185, 42380, 58370, 73187, 116740, 146374, 292748, 365935, 731870, 951431, 1463740, 1902862, 3805724, 4757155, 9514310, 19028620]

約数ペア:

[(1, 19028620), (2, 9514310), (4, 4757155), (5, 3805724), (10, 1902862), (13, 1463740), (20, 951431), (26, 731870), (52, 365935), (65, 292748), (130, 146374), (163, 116740), (260, 73187), (326, 58370), (449, 42380), (652, 29185), (815, 23348), (898, 21190), (1630, 11674), (1796, 10595), (2119, 8980), (2245, 8476), (3260, 5837), (4238, 4490)]