19936760

素因数分解:

$2^3\times 5^1\times {\mathrm{523}}^1\times {\mathrm{953}}^1$

素因数の和:1487

約数の個数: 32

約数和(自身を含む): 44990640

約数和(自身を除く): 25053880

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 523, 953, 1046, 1906, 2092, 2615, 3812, 4184, 4765, 5230, 7624, 9530, 10460, 19060, 20920, 38120, 498419, 996838, 1993676, 2492095, 3987352, 4984190, 9968380, 19936760]

約数ペア:

[(1, 19936760), (2, 9968380), (4, 4984190), (5, 3987352), (8, 2492095), (10, 1993676), (20, 996838), (40, 498419), (523, 38120), (953, 20920), (1046, 19060), (1906, 10460), (2092, 9530), (2615, 7624), (3812, 5230), (4184, 4765)]