21391740

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{118843}}^1$

素因数の和:118858

約数の個数: 36

約数和(自身を含む): 64888824

約数和(自身を除く): 43497084

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 118843, 237686, 356529, 475372, 594215, 713058, 1069587, 1188430, 1426116, 1782645, 2139174, 2376860, 3565290, 4278348, 5347935, 7130580, 10695870, 21391740]

約数ペア:

[(1, 21391740), (2, 10695870), (3, 7130580), (4, 5347935), (5, 4278348), (6, 3565290), (9, 2376860), (10, 2139174), (12, 1782645), (15, 1426116), (18, 1188430), (20, 1069587), (30, 713058), (36, 594215), (45, 475372), (60, 356529), (90, 237686), (180, 118843)]