19979968360

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{45409019}}^1$

素因数の和:45409041

約数の個数: 32

約数和(自身を含む): 49041741600

約数和(自身を除く): 29061773240

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 45409019, 90818038, 181636076, 227045095, 363272152, 454090190, 499499209, 908180380, 998998418, 1816360760, 1997996836, 2497496045, 3995993672, 4994992090, 9989984180, 19979968360]

約数ペア:

[(1, 19979968360), (2, 9989984180), (4, 4994992090), (5, 3995993672), (8, 2497496045), (10, 1997996836), (11, 1816360760), (20, 998998418), (22, 908180380), (40, 499499209), (44, 454090190), (55, 363272152), (88, 227045095), (110, 181636076), (220, 90818038), (440, 45409019)]