21456075

素因数分解:

$3^1\times 5^2\times {\mathrm{523}}^1\times {\mathrm{547}}^1$

素因数の和:1083

約数の個数: 24

約数和(自身を含む): 35606848

約数和(自身を除く): 14150773

約数列:

[1, 3, 5, 15, 25, 75, 523, 547, 1569, 1641, 2615, 2735, 7845, 8205, 13075, 13675, 39225, 41025, 286081, 858243, 1430405, 4291215, 7152025, 21456075]

約数ペア:

[(1, 21456075), (3, 7152025), (5, 4291215), (15, 1430405), (25, 858243), (75, 286081), (523, 41025), (547, 39225), (1569, 13675), (1641, 13075), (2615, 8205), (2735, 7845)]