19879502

素因数分解:

$2^1\times {\mathrm{43}}^1\times {\mathrm{139}}^1\times {\mathrm{1663}}^1$

素因数の和:1847

約数の個数: 16

約数和(自身を含む): 30750720

約数和(自身を除く): 10871218

約数列:

[1, 2, 43, 86, 139, 278, 1663, 3326, 5977, 11954, 71509, 143018, 231157, 462314, 9939751, 19879502]

約数ペア:

[(1, 19879502), (2, 9939751), (43, 462314), (86, 231157), (139, 143018), (278, 71509), (1663, 11954), (3326, 5977)]