42790520

素因数分解:

$2^3\times 5^1\times {\mathrm{821}}^1\times {\mathrm{1303}}^1$

素因数の和:2135

約数の個数: 32

約数和(自身を含む): 96469920

約数和(自身を除く): 53679400

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 821, 1303, 1642, 2606, 3284, 4105, 5212, 6515, 6568, 8210, 10424, 13030, 16420, 26060, 32840, 52120, 1069763, 2139526, 4279052, 5348815, 8558104, 10697630, 21395260, 42790520]

約数ペア:

[(1, 42790520), (2, 21395260), (4, 10697630), (5, 8558104), (8, 5348815), (10, 4279052), (20, 2139526), (40, 1069763), (821, 52120), (1303, 32840), (1642, 26060), (2606, 16420), (3284, 13030), (4105, 10424), (5212, 8210), (6515, 6568)]