21090315

素因数分解:

$3^1\times 5^1\times {\mathrm{101}}^1\times {\mathrm{13921}}^1$

素因数の和:14030

約数の個数: 16

約数和(自身を含む): 34081056

約数和(自身を除く): 12990741

約数列:

[1, 3, 5, 15, 101, 303, 505, 1515, 13921, 41763, 69605, 208815, 1406021, 4218063, 7030105, 21090315]

約数ペア:

[(1, 21090315), (3, 7030105), (5, 4218063), (15, 1406021), (101, 208815), (303, 69605), (505, 41763), (1515, 13921)]