28688120

素因数分解:

$2^3\times 5^1\times {\mathrm{83}}^1\times {\mathrm{8641}}^1$

素因数の和:8735

約数の個数: 32

約数和(自身を含む): 65333520

約数和(自身を除く): 36645400

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 83, 166, 332, 415, 664, 830, 1660, 3320, 8641, 17282, 34564, 43205, 69128, 86410, 172820, 345640, 717203, 1434406, 2868812, 3586015, 5737624, 7172030, 14344060, 28688120]

約数ペア:

[(1, 28688120), (2, 14344060), (4, 7172030), (5, 5737624), (8, 3586015), (10, 2868812), (20, 1434406), (40, 717203), (83, 345640), (166, 172820), (332, 86410), (415, 69128), (664, 43205), (830, 34564), (1660, 17282), (3320, 8641)]