21374278

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{9221}}^1$

素因数の和:9303

約数の個数: 16

約数和(自身を含む): 34305840

約数和(自身を除く): 12931562

約数列:

[1, 2, 19, 38, 61, 122, 1159, 2318, 9221, 18442, 175199, 350398, 562481, 1124962, 10687139, 21374278]

約数ペア:

[(1, 21374278), (2, 10687139), (19, 1124962), (38, 562481), (61, 350398), (122, 175199), (1159, 18442), (2318, 9221)]