21077615

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{97}}^1\times {\mathrm{3343}}^1$

素因数の和:3458

約数の個数: 16

約数和(自身を含む): 27527808

約数和(自身を除く): 6450193

約数列:

[1, 5, 13, 65, 97, 485, 1261, 3343, 6305, 16715, 43459, 217295, 324271, 1621355, 4215523, 21077615]

約数ペア:

[(1, 21077615), (5, 4215523), (13, 1621355), (65, 324271), (97, 217295), (485, 43459), (1261, 16715), (3343, 6305)]