20453890

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{79}}^1\times {\mathrm{1523}}^1$

素因数の和:1626

約数の個数: 32

約数和(自身を含む): 39502080

約数和(自身を除く): 19048190

約数列:

[1, 2, 5, 10, 17, 34, 79, 85, 158, 170, 395, 790, 1343, 1523, 2686, 3046, 6715, 7615, 13430, 15230, 25891, 51782, 120317, 129455, 240634, 258910, 601585, 1203170, 2045389, 4090778, 10226945, 20453890]

約数ペア:

[(1, 20453890), (2, 10226945), (5, 4090778), (10, 2045389), (17, 1203170), (34, 601585), (79, 258910), (85, 240634), (158, 129455), (170, 120317), (395, 51782), (790, 25891), (1343, 15230), (1523, 13430), (2686, 7615), (3046, 6715)]