685296820

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{2635757}}^1$

素因数の和:2635779

約数の個数: 24

約数和(自身を含む): 1549825704

約数和(自身を除く): 864528884

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 2635757, 5271514, 10543028, 13178785, 26357570, 34264841, 52715140, 68529682, 137059364, 171324205, 342648410, 685296820]

約数ペア:

[(1, 685296820), (2, 342648410), (4, 171324205), (5, 137059364), (10, 68529682), (13, 52715140), (20, 34264841), (26, 26357570), (52, 13178785), (65, 10543028), (130, 5271514), (260, 2635757)]