21199478

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{113}}^1\times {\mathrm{4937}}^1$

素因数の和:5071

約数の個数: 16

約数和(自身を含む): 33775920

約数和(自身を除く): 12576442

約数列:

[1, 2, 19, 38, 113, 226, 2147, 4294, 4937, 9874, 93803, 187606, 557881, 1115762, 10599739, 21199478]

約数ペア:

[(1, 21199478), (2, 10599739), (19, 1115762), (38, 557881), (113, 187606), (226, 93803), (2147, 9874), (4294, 4937)]