21401079

素因数分解:

$3^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{151}}^1\times {\mathrm{397}}^1$

素因数の和:575

約数の個数: 32

約数和(自身を含む): 34845696

約数和(自身を除く): 13444617

約数列:

[1, 3, 7, 17, 21, 51, 119, 151, 357, 397, 453, 1057, 1191, 2567, 2779, 3171, 6749, 7701, 8337, 17969, 20247, 47243, 53907, 59947, 141729, 179841, 419629, 1019099, 1258887, 3057297, 7133693, 21401079]

約数ペア:

[(1, 21401079), (3, 7133693), (7, 3057297), (17, 1258887), (21, 1019099), (51, 419629), (119, 179841), (151, 141729), (357, 59947), (397, 53907), (453, 47243), (1057, 20247), (1191, 17969), (2567, 8337), (2779, 7701), (3171, 6749)]