21109070

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{124171}}^1$

素因数の和:124195

約数の個数: 16

約数和(自身を含む): 40231728

約数和(自身を除く): 19122658

約数列:

[1, 2, 5, 10, 17, 34, 85, 170, 124171, 248342, 620855, 1241710, 2110907, 4221814, 10554535, 21109070]

約数ペア:

[(1, 21109070), (2, 10554535), (5, 4221814), (10, 2110907), (17, 1241710), (34, 620855), (85, 248342), (170, 124171)]