21157006

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{73}}^1\times {\mathrm{157}}^1$

素因数の和:316

約数の個数: 32

約数和(自身を含む): 35356608

約数和(自身を除く): 14199602

約数列:

[1, 2, 13, 26, 71, 73, 142, 146, 157, 314, 923, 949, 1846, 1898, 2041, 4082, 5183, 10366, 11147, 11461, 22294, 22922, 67379, 134758, 144911, 148993, 289822, 297986, 813731, 1627462, 10578503, 21157006]

約数ペア:

[(1, 21157006), (2, 10578503), (13, 1627462), (26, 813731), (71, 297986), (73, 289822), (142, 148993), (146, 144911), (157, 134758), (314, 67379), (923, 22922), (949, 22294), (1846, 11461), (1898, 11147), (2041, 10366), (4082, 5183)]