21366585

素因数分解:

$3^4\times 5^1\times {\mathrm{52757}}^1$

素因数の和:52774

約数の個数: 20

約数和(自身を含む): 38302308

約数和(自身を除く): 16935723

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 52757, 158271, 263785, 474813, 791355, 1424439, 2374065, 4273317, 7122195, 21366585]

約数ペア:

[(1, 21366585), (3, 7122195), (5, 4273317), (9, 2374065), (15, 1424439), (27, 791355), (45, 474813), (81, 263785), (135, 158271), (405, 52757)]