21906585

素因数分解:

$3^3\times 5^1\times {\mathrm{263}}^1\times {\mathrm{617}}^1$

素因数の和:894

約数の個数: 32

約数和(自身を含む): 39156480

約数和(自身を除く): 17249895

約数列:

[1, 3, 5, 9, 15, 27, 45, 135, 263, 617, 789, 1315, 1851, 2367, 3085, 3945, 5553, 7101, 9255, 11835, 16659, 27765, 35505, 83295, 162271, 486813, 811355, 1460439, 2434065, 4381317, 7302195, 21906585]

約数ペア:

[(1, 21906585), (3, 7302195), (5, 4381317), (9, 2434065), (15, 1460439), (27, 811355), (45, 486813), (135, 162271), (263, 83295), (617, 35505), (789, 27765), (1315, 16659), (1851, 11835), (2367, 9255), (3085, 7101), (3945, 5553)]