21630160

素因数分解:

$2^4\times 5^1\times {\mathrm{101}}^1\times {\mathrm{2677}}^1$

素因数の和:2791

約数の個数: 40

約数和(自身を含む): 50807016

約数和(自身を除く): 29176856

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 101, 202, 404, 505, 808, 1010, 1616, 2020, 2677, 4040, 5354, 8080, 10708, 13385, 21416, 26770, 42832, 53540, 107080, 214160, 270377, 540754, 1081508, 1351885, 2163016, 2703770, 4326032, 5407540, 10815080, 21630160]

約数ペア:

[(1, 21630160), (2, 10815080), (4, 5407540), (5, 4326032), (8, 2703770), (10, 2163016), (16, 1351885), (20, 1081508), (40, 540754), (80, 270377), (101, 214160), (202, 107080), (404, 53540), (505, 42832), (808, 26770), (1010, 21416), (1616, 13385), (2020, 10708), (2677, 8080), (4040, 5354)]