872080

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{991}}^1$

素因数の和:1015

約数の個数: 40

約数和(自身を含む): 2214144

約数和(自身を除く): 1342064

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 176, 220, 440, 880, 991, 1982, 3964, 4955, 7928, 9910, 10901, 15856, 19820, 21802, 39640, 43604, 54505, 79280, 87208, 109010, 174416, 218020, 436040, 872080]

約数ペア:

[(1, 872080), (2, 436040), (4, 218020), (5, 174416), (8, 109010), (10, 87208), (11, 79280), (16, 54505), (20, 43604), (22, 39640), (40, 21802), (44, 19820), (55, 15856), (80, 10901), (88, 9910), (110, 7928), (176, 4955), (220, 3964), (440, 1982), (880, 991)]