20072900

素因数分解:

$2^2\times 5^2\times {\mathrm{181}}^1\times {\mathrm{1109}}^1$

素因数の和:1304

約数の個数: 36

約数和(自身を含む): 43838340

約数和(自身を除く): 23765440

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 181, 362, 724, 905, 1109, 1810, 2218, 3620, 4436, 4525, 5545, 9050, 11090, 18100, 22180, 27725, 55450, 110900, 200729, 401458, 802916, 1003645, 2007290, 4014580, 5018225, 10036450, 20072900]

約数ペア:

[(1, 20072900), (2, 10036450), (4, 5018225), (5, 4014580), (10, 2007290), (20, 1003645), (25, 802916), (50, 401458), (100, 200729), (181, 110900), (362, 55450), (724, 27725), (905, 22180), (1109, 18100), (1810, 11090), (2218, 9050), (3620, 5545), (4436, 4525)]