21019976

素因数分解:

$2^3\times {\mathrm{23}}^1\times {\mathrm{71}}^1\times {\mathrm{1609}}^1$

素因数の和:1709

約数の個数: 32

約数和(自身を含む): 41731200

約数和(自身を除く): 20711224

約数列:

[1, 2, 4, 8, 23, 46, 71, 92, 142, 184, 284, 568, 1609, 1633, 3218, 3266, 6436, 6532, 12872, 13064, 37007, 74014, 114239, 148028, 228478, 296056, 456956, 913912, 2627497, 5254994, 10509988, 21019976]

約数ペア:

[(1, 21019976), (2, 10509988), (4, 5254994), (8, 2627497), (23, 913912), (46, 456956), (71, 296056), (92, 228478), (142, 148028), (184, 114239), (284, 74014), (568, 37007), (1609, 13064), (1633, 12872), (3218, 6532), (3266, 6436)]