680610490

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{1389001}}^1$

素因数の和:1389022

約数の個数: 24

約数和(自身を含む): 1425116052

約数和(自身を除く): 744505562

約数列:

[1, 2, 5, 7, 10, 14, 35, 49, 70, 98, 245, 490, 1389001, 2778002, 6945005, 9723007, 13890010, 19446014, 48615035, 68061049, 97230070, 136122098, 340305245, 680610490]

約数ペア:

[(1, 680610490), (2, 340305245), (5, 136122098), (7, 97230070), (10, 68061049), (14, 48615035), (35, 19446014), (49, 13890010), (70, 9723007), (98, 6945005), (245, 2778002), (490, 1389001)]