212720105

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{172243}}^1$

素因数の和:172280

約数の個数: 16

約数和(自身を含む): 289369920

約数和(自身を除く): 76649815

約数列:

[1, 5, 13, 19, 65, 95, 247, 1235, 172243, 861215, 2239159, 3272617, 11195795, 16363085, 42544021, 212720105]

約数ペア:

[(1, 212720105), (5, 42544021), (13, 16363085), (19, 11195795), (65, 3272617), (95, 2239159), (247, 861215), (1235, 172243)]