645347787

素因数分解:

$3^1\times 7^2\times {\mathrm{19}}^2\times {\mathrm{12161}}^1$

素因数の和:12216

約数の個数: 36

約数和(自身を含む): 1056488616

約数和(自身を除く): 411140829

約数列:

[1, 3, 7, 19, 21, 49, 57, 133, 147, 361, 399, 931, 1083, 2527, 2793, 7581, 12161, 17689, 36483, 53067, 85127, 231059, 255381, 595889, 693177, 1617413, 1787667, 4390121, 4852239, 11321891, 13170363, 30730847, 33965673, 92192541, 215115929, 645347787]

約数ペア:

[(1, 645347787), (3, 215115929), (7, 92192541), (19, 33965673), (21, 30730847), (49, 13170363), (57, 11321891), (133, 4852239), (147, 4390121), (361, 1787667), (399, 1617413), (931, 693177), (1083, 595889), (2527, 255381), (2793, 231059), (7581, 85127), (12161, 53067), (17689, 36483)]