639991494

素因数分解:

$2^1\times 3^2\times {\mathrm{419}}^1\times {\mathrm{84857}}^1$

素因数の和:85284

約数の個数: 24

約数和(自身を含む): 1389974040

約数和(自身を除く): 749982546

約数列:

[1, 2, 3, 6, 9, 18, 419, 838, 1257, 2514, 3771, 7542, 84857, 169714, 254571, 509142, 763713, 1527426, 35555083, 71110166, 106665249, 213330498, 319995747, 639991494]

約数ペア:

[(1, 639991494), (2, 319995747), (3, 213330498), (6, 106665249), (9, 71110166), (18, 35555083), (419, 1527426), (838, 763713), (1257, 509142), (2514, 254571), (3771, 169714), (7542, 84857)]