80878000

素因数分解:

$2^4\times 5^3\times 7^1\times {\mathrm{53}}^1\times {\mathrm{109}}^1$

素因数の和:192

約数の個数: 160

約数和(自身を含む): 229806720

約数和(自身を除く): 148928720

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 25, 28, 35, 40, 50, 53, 56, 70, 80, 100, 106, 109, 112, 125, 140, 175, 200, 212, 218, 250, 265, 280, 350, 371, 400, 424, 436, 500, 530, 545, 560, 700, 742, 763, 848, 872, 875, 1000, 1060, 1090, 1325, 1400, 1484, 1526, 1744, 1750, 1855, 2000, 2120, 2180, 2650, 2725, 2800, 2968, 3052, 3500, 3710, 3815, 4240, 4360, 5300, 5450, 5777, 5936, 6104, 6625, 7000, 7420, 7630, 8720, 9275, 10600, 10900, 11554, 12208, 13250, 13625, 14000, 14840, 15260, 18550, 19075, 21200, 21800, 23108, 26500, 27250, 28885, 29680, 30520, 37100, 38150, 40439, 43600, 46216, 46375, 53000, 54500, 57770, 61040, 74200, 76300, 80878, 92432, 92750, 95375, 106000, 109000, 115540, 144425, 148400, 152600, 161756, 185500, 190750, 202195, 218000, 231080, 288850, 305200, 323512, 371000, 381500, 404390, 462160, 577700, 647024, 722125, 742000, 763000, 808780, 1010975, 1155400, 1444250, 1526000, 1617560, 2021950, 2310800, 2888500, 3235120, 4043900, 5054875, 5777000, 8087800, 10109750, 11554000, 16175600, 20219500, 40439000, 80878000]

約数ペア:

[(1, 80878000), (2, 40439000), (4, 20219500), (5, 16175600), (7, 11554000), (8, 10109750), (10, 8087800), (14, 5777000), (16, 5054875), (20, 4043900), (25, 3235120), (28, 2888500), (35, 2310800), (40, 2021950), (50, 1617560), (53, 1526000), (56, 1444250), (70, 1155400), (80, 1010975), (100, 808780), (106, 763000), (109, 742000), (112, 722125), (125, 647024), (140, 577700), (175, 462160), (200, 404390), (212, 381500), (218, 371000), (250, 323512), (265, 305200), (280, 288850), (350, 231080), (371, 218000), (400, 202195), (424, 190750), (436, 185500), (500, 161756), (530, 152600), (545, 148400), (560, 144425), (700, 115540), (742, 109000), (763, 106000), (848, 95375), (872, 92750), (875, 92432), (1000, 80878), (1060, 76300), (1090, 74200), (1325, 61040), (1400, 57770), (1484, 54500), (1526, 53000), (1744, 46375), (1750, 46216), (1855, 43600), (2000, 40439), (2120, 38150), (2180, 37100), (2650, 30520), (2725, 29680), (2800, 28885), (2968, 27250), (3052, 26500), (3500, 23108), (3710, 21800), (3815, 21200), (4240, 19075), (4360, 18550), (5300, 15260), (5450, 14840), (5777, 14000), (5936, 13625), (6104, 13250), (6625, 12208), (7000, 11554), (7420, 10900), (7630, 10600), (8720, 9275)]