18897571

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{12917}}^1$

素因数の和:12954

約数の個数: 16

約数和(自身を含む): 24802560

約数和(自身を除く): 5904989

約数列:

[1, 7, 11, 19, 77, 133, 209, 1463, 12917, 90419, 142087, 245423, 994609, 1717961, 2699653, 18897571]

約数ペア:

[(1, 18897571), (7, 2699653), (11, 1717961), (19, 994609), (77, 245423), (133, 142087), (209, 90419), (1463, 12917)]