21521072

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{70793}}^1$

素因数の和:70820

約数の個数: 20

約数和(自身を含む): 43892280

約数和(自身を除く): 22371208

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 152, 304, 70793, 141586, 283172, 566344, 1132688, 1345067, 2690134, 5380268, 10760536, 21521072]

約数ペア:

[(1, 21521072), (2, 10760536), (4, 5380268), (8, 2690134), (16, 1345067), (19, 1132688), (38, 566344), (76, 283172), (152, 141586), (304, 70793)]