21671307

素因数分解:

$3^4\times 7^1\times {\mathrm{37}}^1\times {\mathrm{1033}}^1$

素因数の和:1089

約数の個数: 40

約数和(自身を含む): 38034656

約数和(自身を除く): 16363349

約数列:

[1, 3, 7, 9, 21, 27, 37, 63, 81, 111, 189, 259, 333, 567, 777, 999, 1033, 2331, 2997, 3099, 6993, 7231, 9297, 20979, 21693, 27891, 38221, 65079, 83673, 114663, 195237, 267547, 343989, 585711, 802641, 1031967, 2407923, 3095901, 7223769, 21671307]

約数ペア:

[(1, 21671307), (3, 7223769), (7, 3095901), (9, 2407923), (21, 1031967), (27, 802641), (37, 585711), (63, 343989), (81, 267547), (111, 195237), (189, 114663), (259, 83673), (333, 65079), (567, 38221), (777, 27891), (999, 21693), (1033, 20979), (2331, 9297), (2997, 7231), (3099, 6993)]