2840420

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{12911}}^1$

素因数の和:12931

約数の個数: 24

約数和(自身を含む): 6507648

約数和(自身を除く): 3667228

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 12911, 25822, 51644, 64555, 129110, 142021, 258220, 284042, 568084, 710105, 1420210, 2840420]

約数ペア:

[(1, 2840420), (2, 1420210), (4, 710105), (5, 568084), (10, 284042), (11, 258220), (20, 142021), (22, 129110), (44, 64555), (55, 51644), (110, 25822), (220, 12911)]