20537270

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{239}}^1\times {\mathrm{661}}^1$

素因数の和:920

約数の個数: 32

約数和(自身を含む): 40037760

約数和(自身を除く): 19500490

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 239, 478, 661, 1195, 1322, 2390, 3107, 3305, 6214, 6610, 8593, 15535, 17186, 31070, 42965, 85930, 157979, 315958, 789895, 1579790, 2053727, 4107454, 10268635, 20537270]

約数ペア:

[(1, 20537270), (2, 10268635), (5, 4107454), (10, 2053727), (13, 1579790), (26, 789895), (65, 315958), (130, 157979), (239, 85930), (478, 42965), (661, 31070), (1195, 17186), (1322, 15535), (2390, 8593), (3107, 6610), (3305, 6214)]