19989268

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{7253}}^1$

素因数の和:7323

約数の個数: 24

約数和(自身を含む): 38388168

約数和(自身を除く): 18398900

約数列:

[1, 2, 4, 13, 26, 52, 53, 106, 212, 689, 1378, 2756, 7253, 14506, 29012, 94289, 188578, 377156, 384409, 768818, 1537636, 4997317, 9994634, 19989268]

約数ペア:

[(1, 19989268), (2, 9994634), (4, 4997317), (13, 1537636), (26, 768818), (52, 384409), (53, 377156), (106, 188578), (212, 94289), (689, 29012), (1378, 14506), (2756, 7253)]