81871356

素因数分解:

$2^2\times 3^1\times 7^3\times {\mathrm{19891}}^1$

素因数の和:19919

約数の個数: 48

約数和(自身を含む): 222790400

約数和(自身を除く): 140919044

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 49, 84, 98, 147, 196, 294, 343, 588, 686, 1029, 1372, 2058, 4116, 19891, 39782, 59673, 79564, 119346, 139237, 238692, 278474, 417711, 556948, 835422, 974659, 1670844, 1949318, 2923977, 3898636, 5847954, 6822613, 11695908, 13645226, 20467839, 27290452, 40935678, 81871356]

約数ペア:

[(1, 81871356), (2, 40935678), (3, 27290452), (4, 20467839), (6, 13645226), (7, 11695908), (12, 6822613), (14, 5847954), (21, 3898636), (28, 2923977), (42, 1949318), (49, 1670844), (84, 974659), (98, 835422), (147, 556948), (196, 417711), (294, 278474), (343, 238692), (588, 139237), (686, 119346), (1029, 79564), (1372, 59673), (2058, 39782), (4116, 19891)]