19754540

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{75979}}^1$

素因数の和:76001

約数の個数: 24

約数和(自身を含む): 44676240

約数和(自身を除く): 24921700

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 75979, 151958, 303916, 379895, 759790, 987727, 1519580, 1975454, 3950908, 4938635, 9877270, 19754540]

約数ペア:

[(1, 19754540), (2, 9877270), (4, 4938635), (5, 3950908), (10, 1975454), (13, 1519580), (20, 987727), (26, 759790), (52, 379895), (65, 303916), (130, 151958), (260, 75979)]