28918981

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{41}}^1\times {\mathrm{337}}^1$

素因数の和:421

約数の個数: 32

約数和(自身を含む): 38158848

約数和(自身を除く): 9239867

約数列:

[1, 7, 13, 23, 41, 91, 161, 287, 299, 337, 533, 943, 2093, 2359, 3731, 4381, 6601, 7751, 12259, 13817, 30667, 54257, 85813, 96719, 100763, 179621, 317791, 705341, 1257347, 2224537, 4131283, 28918981]

約数ペア:

[(1, 28918981), (7, 4131283), (13, 2224537), (23, 1257347), (41, 705341), (91, 317791), (161, 179621), (287, 100763), (299, 96719), (337, 85813), (533, 54257), (943, 30667), (2093, 13817), (2359, 12259), (3731, 7751), (4381, 6601)]