19492460

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^2\times {\mathrm{73}}^1\times {\mathrm{79}}^1$

素因数の和:187

約数の個数: 72

約数和(自身を含む): 45501120

約数和(自身を除く): 26008660

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 73, 79, 130, 146, 158, 169, 260, 292, 316, 338, 365, 395, 676, 730, 790, 845, 949, 1027, 1460, 1580, 1690, 1898, 2054, 3380, 3796, 4108, 4745, 5135, 5767, 9490, 10270, 11534, 12337, 13351, 18980, 20540, 23068, 24674, 26702, 28835, 49348, 53404, 57670, 61685, 66755, 74971, 115340, 123370, 133510, 149942, 246740, 267020, 299884, 374855, 749710, 974623, 1499420, 1949246, 3898492, 4873115, 9746230, 19492460]

約数ペア:

[(1, 19492460), (2, 9746230), (4, 4873115), (5, 3898492), (10, 1949246), (13, 1499420), (20, 974623), (26, 749710), (52, 374855), (65, 299884), (73, 267020), (79, 246740), (130, 149942), (146, 133510), (158, 123370), (169, 115340), (260, 74971), (292, 66755), (316, 61685), (338, 57670), (365, 53404), (395, 49348), (676, 28835), (730, 26702), (790, 24674), (845, 23068), (949, 20540), (1027, 18980), (1460, 13351), (1580, 12337), (1690, 11534), (1898, 10270), (2054, 9490), (3380, 5767), (3796, 5135), (4108, 4745)]