21726352

素因数分解:

$2^4\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{1373}}^1$

素因数の和:1447

約数の個数: 40

約数和(自身を含む): 44979264

約数和(自身を除く): 23252912

約数列:

[1, 2, 4, 8, 16, 23, 43, 46, 86, 92, 172, 184, 344, 368, 688, 989, 1373, 1978, 2746, 3956, 5492, 7912, 10984, 15824, 21968, 31579, 59039, 63158, 118078, 126316, 236156, 252632, 472312, 505264, 944624, 1357897, 2715794, 5431588, 10863176, 21726352]

約数ペア:

[(1, 21726352), (2, 10863176), (4, 5431588), (8, 2715794), (16, 1357897), (23, 944624), (43, 505264), (46, 472312), (86, 252632), (92, 236156), (172, 126316), (184, 118078), (344, 63158), (368, 59039), (688, 31579), (989, 21968), (1373, 15824), (1978, 10984), (2746, 7912), (3956, 5492)]