678222740

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{2608549}}^1$

素因数の和:2608571

約数の個数: 24

約数和(自身を含む): 1533827400

約数和(自身を除く): 855604660

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 2608549, 5217098, 10434196, 13042745, 26085490, 33911137, 52170980, 67822274, 135644548, 169555685, 339111370, 678222740]

約数ペア:

[(1, 678222740), (2, 339111370), (4, 169555685), (5, 135644548), (10, 67822274), (13, 52170980), (20, 33911137), (26, 26085490), (52, 13042745), (65, 10434196), (130, 5217098), (260, 2608549)]