691340

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{2659}}^1$

素因数の和:2681

約数の個数: 24

約数和(自身を含む): 1564080

約数和(自身を除く): 872740

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 2659, 5318, 10636, 13295, 26590, 34567, 53180, 69134, 138268, 172835, 345670, 691340]

約数ペア:

[(1, 691340), (2, 345670), (4, 172835), (5, 138268), (10, 69134), (13, 53180), (20, 34567), (26, 26590), (52, 13295), (65, 10636), (130, 5318), (260, 2659)]