199911220

素因数分解:

$2^2\times 5^1\times {\mathrm{2393}}^1\times {\mathrm{4177}}^1$

素因数の和:6579

約数の個数: 24

約数和(自身を含む): 420089544

約数和(自身を除く): 220178324

約数列:

[1, 2, 4, 5, 10, 20, 2393, 4177, 4786, 8354, 9572, 11965, 16708, 20885, 23930, 41770, 47860, 83540, 9995561, 19991122, 39982244, 49977805, 99955610, 199911220]

約数ペア:

[(1, 199911220), (2, 99955610), (4, 49977805), (5, 39982244), (10, 19991122), (20, 9995561), (2393, 83540), (4177, 47860), (4786, 41770), (8354, 23930), (9572, 20885), (11965, 16708)]