20995992

素因数分解:

$2^3\times 3^2\times {\mathrm{331}}^1\times {\mathrm{881}}^1$

素因数の和:1224

約数の個数: 48

約数和(自身を含む): 57100680

約数和(自身を除く): 36104688

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 36, 72, 331, 662, 881, 993, 1324, 1762, 1986, 2643, 2648, 2979, 3524, 3972, 5286, 5958, 7048, 7929, 7944, 10572, 11916, 15858, 21144, 23832, 31716, 63432, 291611, 583222, 874833, 1166444, 1749666, 2332888, 2624499, 3499332, 5248998, 6998664, 10497996, 20995992]

約数ペア:

[(1, 20995992), (2, 10497996), (3, 6998664), (4, 5248998), (6, 3499332), (8, 2624499), (9, 2332888), (12, 1749666), (18, 1166444), (24, 874833), (36, 583222), (72, 291611), (331, 63432), (662, 31716), (881, 23832), (993, 21144), (1324, 15858), (1762, 11916), (1986, 10572), (2643, 7944), (2648, 7929), (2979, 7048), (3524, 5958), (3972, 5286)]