18700090

素因数分解:

$2^1\times 5^1\times {\mathrm{79}}^1\times {\mathrm{23671}}^1$

素因数の和:23757

約数の個数: 16

約数和(自身を含む): 34087680

約数和(自身を除く): 15387590

約数列:

[1, 2, 5, 10, 79, 158, 395, 790, 23671, 47342, 118355, 236710, 1870009, 3740018, 9350045, 18700090]

約数ペア:

[(1, 18700090), (2, 9350045), (5, 3740018), (10, 1870009), (79, 236710), (158, 118355), (395, 47342), (790, 23671)]