8720800

素因数分解:

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

素因数の和:1022

約数の個数: 72

約数和(自身を含む): 23248512

約数和(自身を除く): 14527712

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 25, 32, 40, 44, 50, 55, 80, 88, 100, 110, 160, 176, 200, 220, 275, 352, 400, 440, 550, 800, 880, 991, 1100, 1760, 1982, 2200, 3964, 4400, 4955, 7928, 8800, 9910, 10901, 15856, 19820, 21802, 24775, 31712, 39640, 43604, 49550, 54505, 79280, 87208, 99100, 109010, 158560, 174416, 198200, 218020, 272525, 348832, 396400, 436040, 545050, 792800, 872080, 1090100, 1744160, 2180200, 4360400, 8720800]

約数ペア:

[(1, 8720800), (2, 4360400), (4, 2180200), (5, 1744160), (8, 1090100), (10, 872080), (11, 792800), (16, 545050), (20, 436040), (22, 396400), (25, 348832), (32, 272525), (40, 218020), (44, 198200), (50, 174416), (55, 158560), (80, 109010), (88, 99100), (100, 87208), (110, 79280), (160, 54505), (176, 49550), (200, 43604), (220, 39640), (275, 31712), (352, 24775), (400, 21802), (440, 19820), (550, 15856), (800, 10901), (880, 9910), (991, 8800), (1100, 7928), (1760, 4955), (1982, 4400), (2200, 3964)]