21539020

素因数分解:

$2^2\times 5^1\times {\mathrm{131}}^1\times {\mathrm{8221}}^1$

素因数の和:8361

約数の個数: 24

約数和(自身を含む): 45582768

約数和(自身を除く): 24043748

約数列:

[1, 2, 4, 5, 10, 20, 131, 262, 524, 655, 1310, 2620, 8221, 16442, 32884, 41105, 82210, 164420, 1076951, 2153902, 4307804, 5384755, 10769510, 21539020]

約数ペア:

[(1, 21539020), (2, 10769510), (4, 5384755), (5, 4307804), (10, 2153902), (20, 1076951), (131, 164420), (262, 82210), (524, 41105), (655, 32884), (1310, 16442), (2620, 8221)]