21788305

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{3329}}^1$

素因数の和:3369

約数の個数: 32

約数和(自身を含む): 34525440

約数和(自身を除く): 12737135

約数列:

[1, 5, 7, 11, 17, 35, 55, 77, 85, 119, 187, 385, 595, 935, 1309, 3329, 6545, 16645, 23303, 36619, 56593, 116515, 183095, 256333, 282965, 396151, 622523, 1281665, 1980755, 3112615, 4357661, 21788305]

約数ペア:

[(1, 21788305), (5, 4357661), (7, 3112615), (11, 1980755), (17, 1281665), (35, 622523), (55, 396151), (77, 282965), (85, 256333), (119, 183095), (187, 116515), (385, 56593), (595, 36619), (935, 23303), (1309, 16645), (3329, 6545)]