20419855

素因数分解:

$5^1\times {\mathrm{31}}^1\times {\mathrm{47}}^1\times {\mathrm{2803}}^1$

素因数の和:2886

約数の個数: 16

約数和(自身を含む): 25841664

約数和(自身を除く): 5421809

約数列:

[1, 5, 31, 47, 155, 235, 1457, 2803, 7285, 14015, 86893, 131741, 434465, 658705, 4083971, 20419855]

約数ペア:

[(1, 20419855), (5, 4083971), (31, 658705), (47, 434465), (155, 131741), (235, 86893), (1457, 14015), (2803, 7285)]