20975216

素因数分解:

$2^4\times {\mathrm{61}}^1\times {\mathrm{21491}}^1$

素因数の和:21560

約数の個数: 20

約数和(自身を含む): 41307624

約数和(自身を除く): 20332408

約数列:

[1, 2, 4, 8, 16, 61, 122, 244, 488, 976, 21491, 42982, 85964, 171928, 343856, 1310951, 2621902, 5243804, 10487608, 20975216]

約数ペア:

[(1, 20975216), (2, 10487608), (4, 5243804), (8, 2621902), (16, 1310951), (61, 343856), (122, 171928), (244, 85964), (488, 42982), (976, 21491)]