19815994

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{569}}^1\times {\mathrm{1583}}^1$

素因数の和:2165

約数の個数: 16

約数和(自身を含む): 32503680

約数和(自身を除く): 12687686

約数列:

[1, 2, 11, 22, 569, 1138, 1583, 3166, 6259, 12518, 17413, 34826, 900727, 1801454, 9907997, 19815994]

約数ペア:

[(1, 19815994), (2, 9907997), (11, 1801454), (22, 900727), (569, 34826), (1138, 17413), (1583, 12518), (3166, 6259)]