21737480

素因数分解:

$2^3\times 5^1\times {\mathrm{67}}^1\times {\mathrm{8111}}^1$

素因数の和:8189

約数の個数: 32

約数和(自身を含む): 49645440

約数和(自身を除く): 27907960

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 67, 134, 268, 335, 536, 670, 1340, 2680, 8111, 16222, 32444, 40555, 64888, 81110, 162220, 324440, 543437, 1086874, 2173748, 2717185, 4347496, 5434370, 10868740, 21737480]

約数ペア:

[(1, 21737480), (2, 10868740), (4, 5434370), (5, 4347496), (8, 2717185), (10, 2173748), (20, 1086874), (40, 543437), (67, 324440), (134, 162220), (268, 81110), (335, 64888), (536, 40555), (670, 32444), (1340, 16222), (2680, 8111)]