28891930

素因数分解:

$2^1\times 5^1\times {\mathrm{137}}^1\times {\mathrm{21089}}^1$

素因数の和:21233

約数の個数: 16

約数和(自身を含む): 52387560

約数和(自身を除く): 23495630

約数列:

[1, 2, 5, 10, 137, 274, 685, 1370, 21089, 42178, 105445, 210890, 2889193, 5778386, 14445965, 28891930]

約数ペア:

[(1, 28891930), (2, 14445965), (5, 5778386), (10, 2889193), (137, 210890), (274, 105445), (685, 42178), (1370, 21089)]