21372169

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{263}}^1$

素因数の和:349

約数の個数: 32

約数和(自身を含む): 28385280

約数和(自身を除く): 7013111

約数列:

[1, 7, 13, 19, 47, 91, 133, 247, 263, 329, 611, 893, 1729, 1841, 3419, 4277, 4997, 6251, 11609, 12361, 23933, 34979, 64961, 81263, 86527, 160693, 234859, 454727, 1124851, 1644013, 3053167, 21372169]

約数ペア:

[(1, 21372169), (7, 3053167), (13, 1644013), (19, 1124851), (47, 454727), (91, 234859), (133, 160693), (247, 86527), (263, 81263), (329, 64961), (611, 34979), (893, 23933), (1729, 12361), (1841, 11609), (3419, 6251), (4277, 4997)]