21805203

素因数分解:

$3^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{103}}^1\times {\mathrm{593}}^1$

素因数の和:723

約数の個数: 32

約数和(自身を含む): 35582976

約数和(自身を除く): 13777773

約数列:

[1, 3, 7, 17, 21, 51, 103, 119, 309, 357, 593, 721, 1751, 1779, 2163, 4151, 5253, 10081, 12257, 12453, 30243, 36771, 61079, 70567, 183237, 211701, 427553, 1038343, 1282659, 3115029, 7268401, 21805203]

約数ペア:

[(1, 21805203), (3, 7268401), (7, 3115029), (17, 1282659), (21, 1038343), (51, 427553), (103, 211701), (119, 183237), (309, 70567), (357, 61079), (593, 36771), (721, 30243), (1751, 12453), (1779, 12257), (2163, 10081), (4151, 5253)]