18890890

素因数分解:

$2^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{65141}}^1$

素因数の和:65177

約数の個数: 16

約数和(自身を含む): 35176680

約数和(自身を除く): 16285790

約数列:

[1, 2, 5, 10, 29, 58, 145, 290, 65141, 130282, 325705, 651410, 1889089, 3778178, 9445445, 18890890]

約数ペア:

[(1, 18890890), (2, 9445445), (5, 3778178), (10, 1889089), (29, 651410), (58, 325705), (145, 130282), (290, 65141)]