81290000

素因数分解:

$2^4\times 5^4\times {\mathrm{11}}^1\times {\mathrm{739}}^1$

素因数の和:778

約数の個数: 100

約数和(自身を含む): 214993680

約数和(自身を除く): 133703680

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 25, 40, 44, 50, 55, 80, 88, 100, 110, 125, 176, 200, 220, 250, 275, 400, 440, 500, 550, 625, 739, 880, 1000, 1100, 1250, 1375, 1478, 2000, 2200, 2500, 2750, 2956, 3695, 4400, 5000, 5500, 5912, 6875, 7390, 8129, 10000, 11000, 11824, 13750, 14780, 16258, 18475, 22000, 27500, 29560, 32516, 36950, 40645, 55000, 59120, 65032, 73900, 81290, 92375, 110000, 130064, 147800, 162580, 184750, 203225, 295600, 325160, 369500, 406450, 461875, 650320, 739000, 812900, 923750, 1016125, 1478000, 1625800, 1847500, 2032250, 3251600, 3695000, 4064500, 5080625, 7390000, 8129000, 10161250, 16258000, 20322500, 40645000, 81290000]

約数ペア:

[(1, 81290000), (2, 40645000), (4, 20322500), (5, 16258000), (8, 10161250), (10, 8129000), (11, 7390000), (16, 5080625), (20, 4064500), (22, 3695000), (25, 3251600), (40, 2032250), (44, 1847500), (50, 1625800), (55, 1478000), (80, 1016125), (88, 923750), (100, 812900), (110, 739000), (125, 650320), (176, 461875), (200, 406450), (220, 369500), (250, 325160), (275, 295600), (400, 203225), (440, 184750), (500, 162580), (550, 147800), (625, 130064), (739, 110000), (880, 92375), (1000, 81290), (1100, 73900), (1250, 65032), (1375, 59120), (1478, 55000), (2000, 40645), (2200, 36950), (2500, 32516), (2750, 29560), (2956, 27500), (3695, 22000), (4400, 18475), (5000, 16258), (5500, 14780), (5912, 13750), (6875, 11824), (7390, 11000), (8129, 10000)]