81178400

素因数分解:

$2^5\times 5^2\times {\mathrm{17}}^1\times {\mathrm{47}}^1\times {\mathrm{127}}^1$

素因数の和:211

約数の個数: 144

約数和(自身を含む): 215986176

約数和(自身を除く): 134807776

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 25, 32, 34, 40, 47, 50, 68, 80, 85, 94, 100, 127, 136, 160, 170, 188, 200, 235, 254, 272, 340, 376, 400, 425, 470, 508, 544, 635, 680, 752, 799, 800, 850, 940, 1016, 1175, 1270, 1360, 1504, 1598, 1700, 1880, 2032, 2159, 2350, 2540, 2720, 3175, 3196, 3400, 3760, 3995, 4064, 4318, 4700, 5080, 5969, 6350, 6392, 6800, 7520, 7990, 8636, 9400, 10160, 10795, 11938, 12700, 12784, 13600, 15980, 17272, 18800, 19975, 20320, 21590, 23876, 25400, 25568, 29845, 31960, 34544, 37600, 39950, 43180, 47752, 50800, 53975, 59690, 63920, 69088, 79900, 86360, 95504, 101473, 101600, 107950, 119380, 127840, 149225, 159800, 172720, 191008, 202946, 215900, 238760, 298450, 319600, 345440, 405892, 431800, 477520, 507365, 596900, 639200, 811784, 863600, 955040, 1014730, 1193800, 1623568, 1727200, 2029460, 2387600, 2536825, 3247136, 4058920, 4775200, 5073650, 8117840, 10147300, 16235680, 20294600, 40589200, 81178400]

約数ペア:

[(1, 81178400), (2, 40589200), (4, 20294600), (5, 16235680), (8, 10147300), (10, 8117840), (16, 5073650), (17, 4775200), (20, 4058920), (25, 3247136), (32, 2536825), (34, 2387600), (40, 2029460), (47, 1727200), (50, 1623568), (68, 1193800), (80, 1014730), (85, 955040), (94, 863600), (100, 811784), (127, 639200), (136, 596900), (160, 507365), (170, 477520), (188, 431800), (200, 405892), (235, 345440), (254, 319600), (272, 298450), (340, 238760), (376, 215900), (400, 202946), (425, 191008), (470, 172720), (508, 159800), (544, 149225), (635, 127840), (680, 119380), (752, 107950), (799, 101600), (800, 101473), (850, 95504), (940, 86360), (1016, 79900), (1175, 69088), (1270, 63920), (1360, 59690), (1504, 53975), (1598, 50800), (1700, 47752), (1880, 43180), (2032, 39950), (2159, 37600), (2350, 34544), (2540, 31960), (2720, 29845), (3175, 25568), (3196, 25400), (3400, 23876), (3760, 21590), (3995, 20320), (4064, 19975), (4318, 18800), (4700, 17272), (5080, 15980), (5969, 13600), (6350, 12784), (6392, 12700), (6800, 11938), (7520, 10795), (7990, 10160), (8636, 9400)]