19352080

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{21991}}^1$

素因数の和:22015

約数の個数: 40

約数和(自身を含む): 49086144

約数和(自身を除く): 29734064

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 176, 220, 440, 880, 21991, 43982, 87964, 109955, 175928, 219910, 241901, 351856, 439820, 483802, 879640, 967604, 1209505, 1759280, 1935208, 2419010, 3870416, 4838020, 9676040, 19352080]

約数ペア:

[(1, 19352080), (2, 9676040), (4, 4838020), (5, 3870416), (8, 2419010), (10, 1935208), (11, 1759280), (16, 1209505), (20, 967604), (22, 879640), (40, 483802), (44, 439820), (55, 351856), (80, 241901), (88, 219910), (110, 175928), (176, 109955), (220, 87964), (440, 43982), (880, 21991)]