20780001

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{12347}}^1$

素因数の和:12381

約数の個数: 24

約数和(自身を含む): 34673184

約数和(自身を除く): 13893183

約数列:

[1, 3, 9, 11, 17, 33, 51, 99, 153, 187, 561, 1683, 12347, 37041, 111123, 135817, 209899, 407451, 629697, 1222353, 1889091, 2308889, 6926667, 20780001]

約数ペア:

[(1, 20780001), (3, 6926667), (9, 2308889), (11, 1889091), (17, 1222353), (33, 629697), (51, 407451), (99, 209899), (153, 135817), (187, 111123), (561, 37041), (1683, 12347)]