21865280

素因数分解:

$2^6\times 5^1\times {\mathrm{68329}}^1$

素因数の和:68346

約数の個数: 28

約数和(自身を含む): 52067460

約数和(自身を除く): 30202180

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 68329, 136658, 273316, 341645, 546632, 683290, 1093264, 1366580, 2186528, 2733160, 4373056, 5466320, 10932640, 21865280]

約数ペア:

[(1, 21865280), (2, 10932640), (4, 5466320), (5, 4373056), (8, 2733160), (10, 2186528), (16, 1366580), (20, 1093264), (32, 683290), (40, 546632), (64, 341645), (80, 273316), (160, 136658), (320, 68329)]