21866360

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{12713}}^1$

素因数の和:12767

約数の個数: 32

約数和(自身を含む): 50347440

約数和(自身を除く): 28481080

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 344, 430, 860, 1720, 12713, 25426, 50852, 63565, 101704, 127130, 254260, 508520, 546659, 1093318, 2186636, 2733295, 4373272, 5466590, 10933180, 21866360]

約数ペア:

[(1, 21866360), (2, 10933180), (4, 5466590), (5, 4373272), (8, 2733295), (10, 2186636), (20, 1093318), (40, 546659), (43, 508520), (86, 254260), (172, 127130), (215, 101704), (344, 63565), (430, 50852), (860, 25426), (1720, 12713)]