19781495

素因数分解:

$5^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{4649}}^1$

素因数の和:4714

約数の個数: 16

約数和(自身を含む): 25444800

約数和(自身を除く): 5663305

約数列:

[1, 5, 23, 37, 115, 185, 851, 4255, 4649, 23245, 106927, 172013, 534635, 860065, 3956299, 19781495]

約数ペア:

[(1, 19781495), (5, 3956299), (23, 860065), (37, 534635), (115, 172013), (185, 106927), (851, 23245), (4255, 4649)]