215900000

素因数分解:

$2^5\times 5^5\times {\mathrm{17}}^1\times {\mathrm{127}}^1$

素因数の和:179

約数の個数: 144

約数和(自身を含む): 566963712

約数和(自身を除く): 351063712

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 25, 32, 34, 40, 50, 68, 80, 85, 100, 125, 127, 136, 160, 170, 200, 250, 254, 272, 340, 400, 425, 500, 508, 544, 625, 635, 680, 800, 850, 1000, 1016, 1250, 1270, 1360, 1700, 2000, 2032, 2125, 2159, 2500, 2540, 2720, 3125, 3175, 3400, 4000, 4064, 4250, 4318, 5000, 5080, 6250, 6350, 6800, 8500, 8636, 10000, 10160, 10625, 10795, 12500, 12700, 13600, 15875, 17000, 17272, 20000, 20320, 21250, 21590, 25000, 25400, 31750, 34000, 34544, 42500, 43180, 50000, 50800, 53125, 53975, 63500, 68000, 69088, 79375, 85000, 86360, 100000, 101600, 106250, 107950, 127000, 158750, 170000, 172720, 212500, 215900, 254000, 269875, 317500, 340000, 345440, 396875, 425000, 431800, 508000, 539750, 635000, 793750, 850000, 863600, 1079500, 1270000, 1349375, 1587500, 1700000, 1727200, 2159000, 2540000, 2698750, 3175000, 4318000, 5397500, 6350000, 6746875, 8636000, 10795000, 12700000, 13493750, 21590000, 26987500, 43180000, 53975000, 107950000, 215900000]

約数ペア:

[(1, 215900000), (2, 107950000), (4, 53975000), (5, 43180000), (8, 26987500), (10, 21590000), (16, 13493750), (17, 12700000), (20, 10795000), (25, 8636000), (32, 6746875), (34, 6350000), (40, 5397500), (50, 4318000), (68, 3175000), (80, 2698750), (85, 2540000), (100, 2159000), (125, 1727200), (127, 1700000), (136, 1587500), (160, 1349375), (170, 1270000), (200, 1079500), (250, 863600), (254, 850000), (272, 793750), (340, 635000), (400, 539750), (425, 508000), (500, 431800), (508, 425000), (544, 396875), (625, 345440), (635, 340000), (680, 317500), (800, 269875), (850, 254000), (1000, 215900), (1016, 212500), (1250, 172720), (1270, 170000), (1360, 158750), (1700, 127000), (2000, 107950), (2032, 106250), (2125, 101600), (2159, 100000), (2500, 86360), (2540, 85000), (2720, 79375), (3125, 69088), (3175, 68000), (3400, 63500), (4000, 53975), (4064, 53125), (4250, 50800), (4318, 50000), (5000, 43180), (5080, 42500), (6250, 34544), (6350, 34000), (6800, 31750), (8500, 25400), (8636, 25000), (10000, 21590), (10160, 21250), (10625, 20320), (10795, 20000), (12500, 17272), (12700, 17000), (13600, 15875)]