21758440

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{49451}}^1$

素因数の和:49473

約数の個数: 32

約数和(自身を含む): 53408160

約数和(自身を除く): 31649720

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 49451, 98902, 197804, 247255, 395608, 494510, 543961, 989020, 1087922, 1978040, 2175844, 2719805, 4351688, 5439610, 10879220, 21758440]

約数ペア:

[(1, 21758440), (2, 10879220), (4, 5439610), (5, 4351688), (8, 2719805), (10, 2175844), (11, 1978040), (20, 1087922), (22, 989020), (40, 543961), (44, 494510), (55, 395608), (88, 247255), (110, 197804), (220, 98902), (440, 49451)]