21831278

素因数分解:

$2^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{151}}^1\times {\mathrm{449}}^1$

素因数の和:632

約数の個数: 32

約数和(自身を含む): 39398400

約数和(自身を除く): 17567122

約数列:

[1, 2, 7, 14, 23, 46, 151, 161, 302, 322, 449, 898, 1057, 2114, 3143, 3473, 6286, 6946, 10327, 20654, 24311, 48622, 67799, 72289, 135598, 144578, 474593, 949186, 1559377, 3118754, 10915639, 21831278]

約数ペア:

[(1, 21831278), (2, 10915639), (7, 3118754), (14, 1559377), (23, 949186), (46, 474593), (151, 144578), (161, 135598), (302, 72289), (322, 67799), (449, 48622), (898, 24311), (1057, 20654), (2114, 10327), (3143, 6946), (3473, 6286)]