638248

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^2$

素因数の和:74

約数の個数: 48

約数和(自身を含む): 1440180

約数和(自身を除く): 801932

約数列:

[1, 2, 4, 8, 13, 17, 19, 26, 34, 38, 52, 68, 76, 104, 136, 152, 221, 247, 323, 361, 442, 494, 646, 722, 884, 988, 1292, 1444, 1768, 1976, 2584, 2888, 4199, 4693, 6137, 8398, 9386, 12274, 16796, 18772, 24548, 33592, 37544, 49096, 79781, 159562, 319124, 638248]

約数ペア:

[(1, 638248), (2, 319124), (4, 159562), (8, 79781), (13, 49096), (17, 37544), (19, 33592), (26, 24548), (34, 18772), (38, 16796), (52, 12274), (68, 9386), (76, 8398), (104, 6137), (136, 4693), (152, 4199), (221, 2888), (247, 2584), (323, 1976), (361, 1768), (442, 1444), (494, 1292), (646, 988), (722, 884)]