18209845

素因数分解:

$5^1\times {\mathrm{89}}^1\times {\mathrm{151}}^1\times {\mathrm{271}}^1$

素因数の和:516

約数の個数: 16

約数和(自身を含む): 22325760

約数和(自身を除く): 4115915

約数列:

[1, 5, 89, 151, 271, 445, 755, 1355, 13439, 24119, 40921, 67195, 120595, 204605, 3641969, 18209845]

約数ペア:

[(1, 18209845), (5, 3641969), (89, 204605), (151, 120595), (271, 67195), (445, 40921), (755, 24119), (1355, 13439)]