18977438

素因数分解:

$2^1\times {\mathrm{23}}^1\times {\mathrm{163}}^1\times {\mathrm{2531}}^1$

素因数の和:2719

約数の個数: 16

約数和(自身を含む): 29897856

約数和(自身を除く): 10920418

約数列:

[1, 2, 23, 46, 163, 326, 2531, 3749, 5062, 7498, 58213, 116426, 412553, 825106, 9488719, 18977438]

約数ペア:

[(1, 18977438), (2, 9488719), (23, 825106), (46, 412553), (163, 116426), (326, 58213), (2531, 7498), (3749, 5062)]