21271408

素因数分解:

$2^4\times {\mathrm{101}}^1\times {\mathrm{13163}}^1$

素因数の和:13272

約数の個数: 20

約数和(自身を含む): 41624568

約数和(自身を除く): 20353160

約数列:

[1, 2, 4, 8, 16, 101, 202, 404, 808, 1616, 13163, 26326, 52652, 105304, 210608, 1329463, 2658926, 5317852, 10635704, 21271408]

約数ペア:

[(1, 21271408), (2, 10635704), (4, 5317852), (8, 2658926), (16, 1329463), (101, 210608), (202, 105304), (404, 52652), (808, 26326), (1616, 13163)]