20870140

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{35983}}^1$

素因数の和:36021

約数の個数: 24

約数和(自身を含む): 45339840

約数和(自身を除く): 24469700

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 116, 145, 290, 580, 35983, 71966, 143932, 179915, 359830, 719660, 1043507, 2087014, 4174028, 5217535, 10435070, 20870140]

約数ペア:

[(1, 20870140), (2, 10435070), (4, 5217535), (5, 4174028), (10, 2087014), (20, 1043507), (29, 719660), (58, 359830), (116, 179915), (145, 143932), (290, 71966), (580, 35983)]