42921880

素因数分解:

$2^3\times 5^1\times {\mathrm{821}}^1\times {\mathrm{1307}}^1$

素因数の和:2139

約数の個数: 32

約数和(自身を含む): 96765840

約数和(自身を除く): 53843960

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 821, 1307, 1642, 2614, 3284, 4105, 5228, 6535, 6568, 8210, 10456, 13070, 16420, 26140, 32840, 52280, 1073047, 2146094, 4292188, 5365235, 8584376, 10730470, 21460940, 42921880]

約数ペア:

[(1, 42921880), (2, 21460940), (4, 10730470), (5, 8584376), (8, 5365235), (10, 4292188), (20, 2146094), (40, 1073047), (821, 52280), (1307, 32840), (1642, 26140), (2614, 16420), (3284, 13070), (4105, 10456), (5228, 8210), (6535, 6568)]