21622979

素因数分解:

$7^1\times {\mathrm{71}}^1\times {\mathrm{139}}^1\times {\mathrm{313}}^1$

素因数の和:530

約数の個数: 16

約数和(自身を含む): 25320960

約数和(自身を除く): 3697981

約数列:

[1, 7, 71, 139, 313, 497, 973, 2191, 9869, 22223, 43507, 69083, 155561, 304549, 3088997, 21622979]

約数ペア:

[(1, 21622979), (7, 3088997), (71, 304549), (139, 155561), (313, 69083), (497, 43507), (973, 22223), (2191, 9869)]