20776588

素因数分解:

$2^2\times 7^2\times {\mathrm{71}}^1\times {\mathrm{1493}}^1$

素因数の和:1582

約数の個数: 36

約数和(自身を含む): 42919632

約数和(自身を除く): 22143044

約数列:

[1, 2, 4, 7, 14, 28, 49, 71, 98, 142, 196, 284, 497, 994, 1493, 1988, 2986, 3479, 5972, 6958, 10451, 13916, 20902, 41804, 73157, 106003, 146314, 212006, 292628, 424012, 742021, 1484042, 2968084, 5194147, 10388294, 20776588]

約数ペア:

[(1, 20776588), (2, 10388294), (4, 5194147), (7, 2968084), (14, 1484042), (28, 742021), (49, 424012), (71, 292628), (98, 212006), (142, 146314), (196, 106003), (284, 73157), (497, 41804), (994, 20902), (1493, 13916), (1988, 10451), (2986, 6958), (3479, 5972)]