19427891

素因数分解:

$7^1\times {\mathrm{41}}^1\times {\mathrm{139}}^1\times {\mathrm{487}}^1$

素因数の和:674

約数の個数: 16

約数和(自身を含む): 22955520

約数和(自身を除く): 3527629

約数列:

[1, 7, 41, 139, 287, 487, 973, 3409, 5699, 19967, 39893, 67693, 139769, 473851, 2775413, 19427891]

約数ペア:

[(1, 19427891), (7, 2775413), (41, 473851), (139, 139769), (287, 67693), (487, 39893), (973, 19967), (3409, 5699)]