21978363

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{23}}^2\times {\mathrm{1259}}^1$

素因数の和:1319

約数の個数: 24

約数和(自身を含む): 33445440

約数和(自身を除く): 11467077

約数列:

[1, 3, 11, 23, 33, 69, 253, 529, 759, 1259, 1587, 3777, 5819, 13849, 17457, 28957, 41547, 86871, 318527, 666011, 955581, 1998033, 7326121, 21978363]

約数ペア:

[(1, 21978363), (3, 7326121), (11, 1998033), (23, 955581), (33, 666011), (69, 318527), (253, 86871), (529, 41547), (759, 28957), (1259, 17457), (1587, 13849), (3777, 5819)]