17721769

素因数分解:

${\mathrm{13}}^1\times {\mathrm{17}}^2\times {\mathrm{53}}^1\times {\mathrm{89}}^1$

素因数の和:189

約数の個数: 24

約数和(自身を含む): 20888280

約数和(自身を除く): 3166511

約数列:

[1, 13, 17, 53, 89, 221, 289, 689, 901, 1157, 1513, 3757, 4717, 11713, 15317, 19669, 25721, 61321, 80189, 199121, 334373, 1042457, 1363213, 17721769]

約数ペア:

[(1, 17721769), (13, 1363213), (17, 1042457), (53, 334373), (89, 199121), (221, 80189), (289, 61321), (689, 25721), (901, 19669), (1157, 15317), (1513, 11713), (3757, 4717)]