20002079920

素因数分解:

$2^4\times 5^1\times {\mathrm{1039}}^1\times {\mathrm{240641}}^1$

素因数の和:241693

約数の個数: 40

約数和(自身を含む): 46549788480

約数和(自身を除く): 26547708560

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1039, 2078, 4156, 5195, 8312, 10390, 16624, 20780, 41560, 83120, 240641, 481282, 962564, 1203205, 1925128, 2406410, 3850256, 4812820, 9625640, 19251280, 250025999, 500051998, 1000103996, 1250129995, 2000207992, 2500259990, 4000415984, 5000519980, 10001039960, 20002079920]

約数ペア:

[(1, 20002079920), (2, 10001039960), (4, 5000519980), (5, 4000415984), (8, 2500259990), (10, 2000207992), (16, 1250129995), (20, 1000103996), (40, 500051998), (80, 250025999), (1039, 19251280), (2078, 9625640), (4156, 4812820), (5195, 3850256), (8312, 2406410), (10390, 1925128), (16624, 1203205), (20780, 962564), (41560, 481282), (83120, 240641)]