81865215

素因数分解:

$3^3\times 5^1\times {\mathrm{601}}^1\times {\mathrm{1009}}^1$

素因数の和:1624

約数の個数: 32

約数和(自身を含む): 145924800

約数和(自身を除く): 64059585

約数列:

[1, 3, 5, 9, 15, 27, 45, 135, 601, 1009, 1803, 3005, 3027, 5045, 5409, 9015, 9081, 15135, 16227, 27045, 27243, 45405, 81135, 136215, 606409, 1819227, 3032045, 5457681, 9096135, 16373043, 27288405, 81865215]

約数ペア:

[(1, 81865215), (3, 27288405), (5, 16373043), (9, 9096135), (15, 5457681), (27, 3032045), (45, 1819227), (135, 606409), (601, 136215), (1009, 81135), (1803, 45405), (3005, 27243), (3027, 27045), (5045, 16227), (5409, 15135), (9015, 9081)]