20500205

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{9091}}^1$

素因数の和:9148

約数の個数: 16

約数和(自身を含む): 27494208

約数和(自身を除く): 6994003

約数列:

[1, 5, 11, 41, 55, 205, 451, 2255, 9091, 45455, 100001, 372731, 500005, 1863655, 4100041, 20500205]

約数ペア:

[(1, 20500205), (5, 4100041), (11, 1863655), (41, 500005), (55, 372731), (205, 100001), (451, 45455), (2255, 9091)]