221519240

素因数分解:

$2^3\times 5^1\times {\mathrm{5537981}}^1$

素因数の和:5537992

約数の個数: 16

約数和(自身を含む): 498418380

約数和(自身を除く): 276899140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 5537981, 11075962, 22151924, 27689905, 44303848, 55379810, 110759620, 221519240]

約数ペア:

[(1, 221519240), (2, 110759620), (4, 55379810), (5, 44303848), (8, 27689905), (10, 22151924), (20, 11075962), (40, 5537981)]