21009616

素因数分解:

$2^4\times {\mathrm{101}}^1\times {\mathrm{13001}}^1$

素因数の和:13110

約数の個数: 20

約数和(自身を含む): 41112324

約数和(自身を除く): 20102708

約数列:

[1, 2, 4, 8, 16, 101, 202, 404, 808, 1616, 13001, 26002, 52004, 104008, 208016, 1313101, 2626202, 5252404, 10504808, 21009616]

約数ペア:

[(1, 21009616), (2, 10504808), (4, 5252404), (8, 2626202), (16, 1313101), (101, 208016), (202, 104008), (404, 52004), (808, 26002), (1616, 13001)]