21531152

素因数分解:

$2^4\times {\mathrm{311}}^1\times {\mathrm{4327}}^1$

素因数の和:4646

約数の個数: 20

約数和(自身を含む): 41860416

約数和(自身を除く): 20329264

約数列:

[1, 2, 4, 8, 16, 311, 622, 1244, 2488, 4327, 4976, 8654, 17308, 34616, 69232, 1345697, 2691394, 5382788, 10765576, 21531152]

約数ペア:

[(1, 21531152), (2, 10765576), (4, 5382788), (8, 2691394), (16, 1345697), (311, 69232), (622, 34616), (1244, 17308), (2488, 8654), (4327, 4976)]