20009000

素因数分解:

$2^3\times 5^3\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{107}}^1$

素因数の和:156

約数の個数: 128

約数和(自身を含む): 54587520

約数和(自身を除く): 34578520

約数列:

[1, 2, 4, 5, 8, 10, 11, 17, 20, 22, 25, 34, 40, 44, 50, 55, 68, 85, 88, 100, 107, 110, 125, 136, 170, 187, 200, 214, 220, 250, 275, 340, 374, 425, 428, 440, 500, 535, 550, 680, 748, 850, 856, 935, 1000, 1070, 1100, 1177, 1375, 1496, 1700, 1819, 1870, 2125, 2140, 2200, 2354, 2675, 2750, 3400, 3638, 3740, 4250, 4280, 4675, 4708, 5350, 5500, 5885, 7276, 7480, 8500, 9095, 9350, 9416, 10700, 11000, 11770, 13375, 14552, 17000, 18190, 18700, 20009, 21400, 23375, 23540, 26750, 29425, 36380, 37400, 40018, 45475, 46750, 47080, 53500, 58850, 72760, 80036, 90950, 93500, 100045, 107000, 117700, 147125, 160072, 181900, 187000, 200090, 227375, 235400, 294250, 363800, 400180, 454750, 500225, 588500, 800360, 909500, 1000450, 1177000, 1819000, 2000900, 2501125, 4001800, 5002250, 10004500, 20009000]

約数ペア:

[(1, 20009000), (2, 10004500), (4, 5002250), (5, 4001800), (8, 2501125), (10, 2000900), (11, 1819000), (17, 1177000), (20, 1000450), (22, 909500), (25, 800360), (34, 588500), (40, 500225), (44, 454750), (50, 400180), (55, 363800), (68, 294250), (85, 235400), (88, 227375), (100, 200090), (107, 187000), (110, 181900), (125, 160072), (136, 147125), (170, 117700), (187, 107000), (200, 100045), (214, 93500), (220, 90950), (250, 80036), (275, 72760), (340, 58850), (374, 53500), (425, 47080), (428, 46750), (440, 45475), (500, 40018), (535, 37400), (550, 36380), (680, 29425), (748, 26750), (850, 23540), (856, 23375), (935, 21400), (1000, 20009), (1070, 18700), (1100, 18190), (1177, 17000), (1375, 14552), (1496, 13375), (1700, 11770), (1819, 11000), (1870, 10700), (2125, 9416), (2140, 9350), (2200, 9095), (2354, 8500), (2675, 7480), (2750, 7276), (3400, 5885), (3638, 5500), (3740, 5350), (4250, 4708), (4280, 4675)]