21199000

素因数分解:

$2^3\times 5^3\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{43}}^1$

素因数の和:110

約数の個数: 128

約数和(自身を含む): 55598400

約数和(自身を除く): 34399400

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 25, 29, 34, 40, 43, 50, 58, 68, 85, 86, 100, 116, 125, 136, 145, 170, 172, 200, 215, 232, 250, 290, 340, 344, 425, 430, 493, 500, 580, 680, 725, 731, 850, 860, 986, 1000, 1075, 1160, 1247, 1450, 1462, 1700, 1720, 1972, 2125, 2150, 2465, 2494, 2900, 2924, 3400, 3625, 3655, 3944, 4250, 4300, 4930, 4988, 5375, 5800, 5848, 6235, 7250, 7310, 8500, 8600, 9860, 9976, 10750, 12325, 12470, 14500, 14620, 17000, 18275, 19720, 21199, 21500, 24650, 24940, 29000, 29240, 31175, 36550, 42398, 43000, 49300, 49880, 61625, 62350, 73100, 84796, 91375, 98600, 105995, 123250, 124700, 146200, 155875, 169592, 182750, 211990, 246500, 249400, 311750, 365500, 423980, 493000, 529975, 623500, 731000, 847960, 1059950, 1247000, 2119900, 2649875, 4239800, 5299750, 10599500, 21199000]

約数ペア:

[(1, 21199000), (2, 10599500), (4, 5299750), (5, 4239800), (8, 2649875), (10, 2119900), (17, 1247000), (20, 1059950), (25, 847960), (29, 731000), (34, 623500), (40, 529975), (43, 493000), (50, 423980), (58, 365500), (68, 311750), (85, 249400), (86, 246500), (100, 211990), (116, 182750), (125, 169592), (136, 155875), (145, 146200), (170, 124700), (172, 123250), (200, 105995), (215, 98600), (232, 91375), (250, 84796), (290, 73100), (340, 62350), (344, 61625), (425, 49880), (430, 49300), (493, 43000), (500, 42398), (580, 36550), (680, 31175), (725, 29240), (731, 29000), (850, 24940), (860, 24650), (986, 21500), (1000, 21199), (1075, 19720), (1160, 18275), (1247, 17000), (1450, 14620), (1462, 14500), (1700, 12470), (1720, 12325), (1972, 10750), (2125, 9976), (2150, 9860), (2465, 8600), (2494, 8500), (2900, 7310), (2924, 7250), (3400, 6235), (3625, 5848), (3655, 5800), (3944, 5375), (4250, 4988), (4300, 4930)]