21871184

素因数分解:

$2^4\times {\mathrm{61}}^1\times {\mathrm{22409}}^1$

素因数の和:22478

約数の個数: 20

約数和(自身を含む): 43072020

約数和(自身を除く): 21200836

約数列:

[1, 2, 4, 8, 16, 61, 122, 244, 488, 976, 22409, 44818, 89636, 179272, 358544, 1366949, 2733898, 5467796, 10935592, 21871184]

約数ペア:

[(1, 21871184), (2, 10935592), (4, 5467796), (8, 2733898), (16, 1366949), (61, 358544), (122, 179272), (244, 89636), (488, 44818), (976, 22409)]