21722876

素因数分解:

$2^2\times 7^3\times {\mathrm{71}}^1\times {\mathrm{223}}^1$

素因数の和:319

約数の個数: 48

約数和(自身を含む): 45158400

約数和(自身を除く): 23435524

約数列:

[1, 2, 4, 7, 14, 28, 49, 71, 98, 142, 196, 223, 284, 343, 446, 497, 686, 892, 994, 1372, 1561, 1988, 3122, 3479, 6244, 6958, 10927, 13916, 15833, 21854, 24353, 31666, 43708, 48706, 63332, 76489, 97412, 110831, 152978, 221662, 305956, 443324, 775817, 1551634, 3103268, 5430719, 10861438, 21722876]

約数ペア:

[(1, 21722876), (2, 10861438), (4, 5430719), (7, 3103268), (14, 1551634), (28, 775817), (49, 443324), (71, 305956), (98, 221662), (142, 152978), (196, 110831), (223, 97412), (284, 76489), (343, 63332), (446, 48706), (497, 43708), (686, 31666), (892, 24353), (994, 21854), (1372, 15833), (1561, 13916), (1988, 10927), (3122, 6958), (3479, 6244)]