21641337

素因数分解:

$3^5\times {\mathrm{29}}^1\times {\mathrm{37}}^1\times {\mathrm{83}}^1$

素因数の和:164

約数の個数: 48

約数和(自身を含む): 34856640

約数和(自身を除く): 13215303

約数列:

[1, 3, 9, 27, 29, 37, 81, 83, 87, 111, 243, 249, 261, 333, 747, 783, 999, 1073, 2241, 2349, 2407, 2997, 3071, 3219, 6723, 7047, 7221, 8991, 9213, 9657, 20169, 21663, 27639, 28971, 64989, 82917, 86913, 89059, 194967, 248751, 260739, 267177, 584901, 746253, 801531, 2404593, 7213779, 21641337]

約数ペア:

[(1, 21641337), (3, 7213779), (9, 2404593), (27, 801531), (29, 746253), (37, 584901), (81, 267177), (83, 260739), (87, 248751), (111, 194967), (243, 89059), (249, 86913), (261, 82917), (333, 64989), (747, 28971), (783, 27639), (999, 21663), (1073, 20169), (2241, 9657), (2349, 9213), (2407, 8991), (2997, 7221), (3071, 7047), (3219, 6723)]