639969382

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{464419}}^1$

素因数の和:464487

約数の個数: 16

約数和(自身を含む): 1053304560

約数和(自身を除く): 413335178

約数列:

[1, 2, 13, 26, 53, 106, 689, 1378, 464419, 928838, 6037447, 12074894, 24614207, 49228414, 319984691, 639969382]

約数ペア:

[(1, 639969382), (2, 319984691), (13, 49228414), (26, 24614207), (53, 12074894), (106, 6037447), (689, 928838), (1378, 464419)]