21648440

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{49201}}^1$

素因数の和:49223

約数の個数: 32

約数和(自身を含む): 53138160

約数和(自身を除く): 31489720

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 49201, 98402, 196804, 246005, 393608, 492010, 541211, 984020, 1082422, 1968040, 2164844, 2706055, 4329688, 5412110, 10824220, 21648440]

約数ペア:

[(1, 21648440), (2, 10824220), (4, 5412110), (5, 4329688), (8, 2706055), (10, 2164844), (11, 1968040), (20, 1082422), (22, 984020), (40, 541211), (44, 492010), (55, 393608), (88, 246005), (110, 196804), (220, 98402), (440, 49201)]