20291336

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{499}}^1$

素因数の和:558

約数の個数: 64

約数和(自身を含む): 45360000

約数和(自身を除く): 25068664

約数列:

[1, 2, 4, 8, 13, 17, 23, 26, 34, 46, 52, 68, 92, 104, 136, 184, 221, 299, 391, 442, 499, 598, 782, 884, 998, 1196, 1564, 1768, 1996, 2392, 3128, 3992, 5083, 6487, 8483, 10166, 11477, 12974, 16966, 20332, 22954, 25948, 33932, 40664, 45908, 51896, 67864, 91816, 110279, 149201, 195109, 220558, 298402, 390218, 441116, 596804, 780436, 882232, 1193608, 1560872, 2536417, 5072834, 10145668, 20291336]

約数ペア:

[(1, 20291336), (2, 10145668), (4, 5072834), (8, 2536417), (13, 1560872), (17, 1193608), (23, 882232), (26, 780436), (34, 596804), (46, 441116), (52, 390218), (68, 298402), (92, 220558), (104, 195109), (136, 149201), (184, 110279), (221, 91816), (299, 67864), (391, 51896), (442, 45908), (499, 40664), (598, 33932), (782, 25948), (884, 22954), (998, 20332), (1196, 16966), (1564, 12974), (1768, 11477), (1996, 10166), (2392, 8483), (3128, 6487), (3992, 5083)]