638407796

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{107}}^1\times {\mathrm{179}}^1\times {\mathrm{641}}^1$

素因数の和:944

約数の個数: 48

約数和(自身を含む): 1223087040

約数和(自身を除く): 584679244

約数列:

[1, 2, 4, 13, 26, 52, 107, 179, 214, 358, 428, 641, 716, 1282, 1391, 2327, 2564, 2782, 4654, 5564, 8333, 9308, 16666, 19153, 33332, 38306, 68587, 76612, 114739, 137174, 229478, 248989, 274348, 458956, 497978, 891631, 995956, 1491607, 1783262, 2983214, 3566524, 5966428, 12277073, 24554146, 49108292, 159601949, 319203898, 638407796]

約数ペア:

[(1, 638407796), (2, 319203898), (4, 159601949), (13, 49108292), (26, 24554146), (52, 12277073), (107, 5966428), (179, 3566524), (214, 2983214), (358, 1783262), (428, 1491607), (641, 995956), (716, 891631), (1282, 497978), (1391, 458956), (2327, 274348), (2564, 248989), (2782, 229478), (4654, 137174), (5564, 114739), (8333, 76612), (9308, 68587), (16666, 38306), (19153, 33332)]