81568879

素因数分解:

$7^2\times {\mathrm{23}}^1\times {\mathrm{157}}^1\times {\mathrm{461}}^1$

素因数の和:655

約数の個数: 24

約数和(自身を含む): 99858528

約数和(自身を除く): 18289649

約数列:

[1, 7, 23, 49, 157, 161, 461, 1099, 1127, 3227, 3611, 7693, 10603, 22589, 25277, 72377, 74221, 176939, 506639, 519547, 1664671, 3546473, 11652697, 81568879]

約数ペア:

[(1, 81568879), (7, 11652697), (23, 3546473), (49, 1664671), (157, 519547), (161, 506639), (461, 176939), (1099, 74221), (1127, 72377), (3227, 25277), (3611, 22589), (7693, 10603)]