21866537

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{12347}}^1$

素因数の和:12388

約数の個数: 16

約数和(自身を含む): 28449792

約数和(自身を除く): 6583255

約数列:

[1, 7, 11, 23, 77, 161, 253, 1771, 12347, 86429, 135817, 283981, 950719, 1987867, 3123791, 21866537]

約数ペア:

[(1, 21866537), (7, 3123791), (11, 1987867), (23, 950719), (77, 283981), (161, 135817), (253, 86429), (1771, 12347)]