18852496

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{233}}^1\times {\mathrm{389}}^1$

素因数の和:643

約数の個数: 40

約数和(自身を含む): 39606840

約数和(自身を除く): 20754344

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 233, 389, 466, 778, 932, 1556, 1864, 3029, 3112, 3728, 5057, 6058, 6224, 10114, 12116, 20228, 24232, 40456, 48464, 80912, 90637, 181274, 362548, 725096, 1178281, 1450192, 2356562, 4713124, 9426248, 18852496]

約数ペア:

[(1, 18852496), (2, 9426248), (4, 4713124), (8, 2356562), (13, 1450192), (16, 1178281), (26, 725096), (52, 362548), (104, 181274), (208, 90637), (233, 80912), (389, 48464), (466, 40456), (778, 24232), (932, 20228), (1556, 12116), (1864, 10114), (3029, 6224), (3112, 6058), (3728, 5057)]