28291977

素因数分解:

$3^3\times 7^1\times {\mathrm{107}}^1\times {\mathrm{1399}}^1$

素因数の和:1522

約数の個数: 32

約数和(自身を含む): 48384000

約数和(自身を除く): 20092023

約数列:

[1, 3, 7, 9, 21, 27, 63, 107, 189, 321, 749, 963, 1399, 2247, 2889, 4197, 6741, 9793, 12591, 20223, 29379, 37773, 88137, 149693, 264411, 449079, 1047851, 1347237, 3143553, 4041711, 9430659, 28291977]

約数ペア:

[(1, 28291977), (3, 9430659), (7, 4041711), (9, 3143553), (21, 1347237), (27, 1047851), (63, 449079), (107, 264411), (189, 149693), (321, 88137), (749, 37773), (963, 29379), (1399, 20223), (2247, 12591), (2889, 9793), (4197, 6741)]