21573135

素因数分解:

$3^4\times 5^1\times {\mathrm{53267}}^1$

素因数の和:53284

約数の個数: 20

約数和(自身を含む): 38672568

約数和(自身を除く): 17099433

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 53267, 159801, 266335, 479403, 799005, 1438209, 2397015, 4314627, 7191045, 21573135]

約数ペア:

[(1, 21573135), (3, 7191045), (5, 4314627), (9, 2397015), (15, 1438209), (27, 799005), (45, 479403), (81, 266335), (135, 159801), (405, 53267)]