219025420

素因数分解:

$2^2\times 5^1\times {\mathrm{349}}^1\times {\mathrm{31379}}^1$

素因数の和:31737

約数の個数: 24

約数和(自身を含む): 461286000

約数和(自身を除く): 242260580

約数列:

[1, 2, 4, 5, 10, 20, 349, 698, 1396, 1745, 3490, 6980, 31379, 62758, 125516, 156895, 313790, 627580, 10951271, 21902542, 43805084, 54756355, 109512710, 219025420]

約数ペア:

[(1, 219025420), (2, 109512710), (4, 54756355), (5, 43805084), (10, 21902542), (20, 10951271), (349, 627580), (698, 313790), (1396, 156895), (1745, 125516), (3490, 62758), (6980, 31379)]