21702320

素因数分解:

$2^4\times 5^1\times {\mathrm{271279}}^1$

素因数の和:271292

約数の個数: 20

約数和(自身を含む): 50458080

約数和(自身を除く): 28755760

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 271279, 542558, 1085116, 1356395, 2170232, 2712790, 4340464, 5425580, 10851160, 21702320]

約数ペア:

[(1, 21702320), (2, 10851160), (4, 5425580), (5, 4340464), (8, 2712790), (10, 2170232), (16, 1356395), (20, 1085116), (40, 542558), (80, 271279)]