209543240

素因数分解:

$2^3\times 5^1\times {\mathrm{5238581}}^1$

素因数の和:5238592

約数の個数: 16

約数和(自身を含む): 471472380

約数和(自身を除く): 261929140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 5238581, 10477162, 20954324, 26192905, 41908648, 52385810, 104771620, 209543240]

約数ペア:

[(1, 209543240), (2, 104771620), (4, 52385810), (5, 41908648), (8, 26192905), (10, 20954324), (20, 10477162), (40, 5238581)]