20889740

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{54973}}^1$

素因数の和:55001

約数の個数: 24

約数和(自身を含む): 46178160

約数和(自身を除く): 25288420

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 380, 54973, 109946, 219892, 274865, 549730, 1044487, 1099460, 2088974, 4177948, 5222435, 10444870, 20889740]

約数ペア:

[(1, 20889740), (2, 10444870), (4, 5222435), (5, 4177948), (10, 2088974), (19, 1099460), (20, 1044487), (38, 549730), (76, 274865), (95, 219892), (190, 109946), (380, 54973)]