21559978

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{17}}^2\times {\mathrm{3391}}^1$

素因数の和:3438

約数の個数: 24

約数和(自身を含む): 37488384

約数和(自身を除く): 15928406

約数列:

[1, 2, 11, 17, 22, 34, 187, 289, 374, 578, 3179, 3391, 6358, 6782, 37301, 57647, 74602, 115294, 634117, 979999, 1268234, 1959998, 10779989, 21559978]

約数ペア:

[(1, 21559978), (2, 10779989), (11, 1959998), (17, 1268234), (22, 979999), (34, 634117), (187, 115294), (289, 74602), (374, 57647), (578, 37301), (3179, 6782), (3391, 6358)]