21569540

素因数分解:

$2^2\times 5^1\times {\mathrm{227}}^1\times {\mathrm{4751}}^1$

素因数の和:4987

約数の個数: 24

約数和(自身を含む): 45505152

約数和(自身を除く): 23935612

約数列:

[1, 2, 4, 5, 10, 20, 227, 454, 908, 1135, 2270, 4540, 4751, 9502, 19004, 23755, 47510, 95020, 1078477, 2156954, 4313908, 5392385, 10784770, 21569540]

約数ペア:

[(1, 21569540), (2, 10784770), (4, 5392385), (5, 4313908), (10, 2156954), (20, 1078477), (227, 95020), (454, 47510), (908, 23755), (1135, 19004), (2270, 9502), (4540, 4751)]