20421770

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^2\times {\mathrm{5657}}^1$

素因数の和:5702

約数の個数: 24

約数和(自身を含む): 38802564

約数和(自身を除く): 18380794

約数列:

[1, 2, 5, 10, 19, 38, 95, 190, 361, 722, 1805, 3610, 5657, 11314, 28285, 56570, 107483, 214966, 537415, 1074830, 2042177, 4084354, 10210885, 20421770]

約数ペア:

[(1, 20421770), (2, 10210885), (5, 4084354), (10, 2042177), (19, 1074830), (38, 537415), (95, 214966), (190, 107483), (361, 56570), (722, 28285), (1805, 11314), (3610, 5657)]