21717416

素因数分解:

$2^3\times 7^1\times {\mathrm{79}}^1\times {\mathrm{4909}}^1$

素因数の和:5001

約数の個数: 32

約数和(自身を含む): 47136000

約数和(自身を除く): 25418584

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 79, 158, 316, 553, 632, 1106, 2212, 4424, 4909, 9818, 19636, 34363, 39272, 68726, 137452, 274904, 387811, 775622, 1551244, 2714677, 3102488, 5429354, 10858708, 21717416]

約数ペア:

[(1, 21717416), (2, 10858708), (4, 5429354), (7, 3102488), (8, 2714677), (14, 1551244), (28, 775622), (56, 387811), (79, 274904), (158, 137452), (316, 68726), (553, 39272), (632, 34363), (1106, 19636), (2212, 9818), (4424, 4909)]