21690782

素因数分解:

$2^1\times {\mathrm{29}}^1\times {\mathrm{47}}^1\times {\mathrm{73}}^1\times {\mathrm{109}}^1$

素因数の和:260

約数の個数: 32

約数和(自身を含む): 35164800

約数和(自身を除く): 13474018

約数列:

[1, 2, 29, 47, 58, 73, 94, 109, 146, 218, 1363, 2117, 2726, 3161, 3431, 4234, 5123, 6322, 6862, 7957, 10246, 15914, 99499, 148567, 198998, 230753, 297134, 373979, 461506, 747958, 10845391, 21690782]

約数ペア:

[(1, 21690782), (2, 10845391), (29, 747958), (47, 461506), (58, 373979), (73, 297134), (94, 230753), (109, 198998), (146, 148567), (218, 99499), (1363, 15914), (2117, 10246), (2726, 7957), (3161, 6862), (3431, 6322), (4234, 5123)]