20570000

素因数分解:

$2^4\times 5^4\times {\mathrm{11}}^2\times {\mathrm{17}}^1$

素因数の和:67

約数の個数: 150

約数和(自身を含む): 57961134

約数和(自身を除く): 37391134

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 17, 20, 22, 25, 34, 40, 44, 50, 55, 68, 80, 85, 88, 100, 110, 121, 125, 136, 170, 176, 187, 200, 220, 242, 250, 272, 275, 340, 374, 400, 425, 440, 484, 500, 550, 605, 625, 680, 748, 850, 880, 935, 968, 1000, 1100, 1210, 1250, 1360, 1375, 1496, 1700, 1870, 1936, 2000, 2057, 2125, 2200, 2420, 2500, 2750, 2992, 3025, 3400, 3740, 4114, 4250, 4400, 4675, 4840, 5000, 5500, 6050, 6800, 6875, 7480, 8228, 8500, 9350, 9680, 10000, 10285, 10625, 11000, 12100, 13750, 14960, 15125, 16456, 17000, 18700, 20570, 21250, 22000, 23375, 24200, 27500, 30250, 32912, 34000, 37400, 41140, 42500, 46750, 48400, 51425, 55000, 60500, 74800, 75625, 82280, 85000, 93500, 102850, 110000, 116875, 121000, 151250, 164560, 170000, 187000, 205700, 233750, 242000, 257125, 302500, 374000, 411400, 467500, 514250, 605000, 822800, 935000, 1028500, 1210000, 1285625, 1870000, 2057000, 2571250, 4114000, 5142500, 10285000, 20570000]

約数ペア:

[(1, 20570000), (2, 10285000), (4, 5142500), (5, 4114000), (8, 2571250), (10, 2057000), (11, 1870000), (16, 1285625), (17, 1210000), (20, 1028500), (22, 935000), (25, 822800), (34, 605000), (40, 514250), (44, 467500), (50, 411400), (55, 374000), (68, 302500), (80, 257125), (85, 242000), (88, 233750), (100, 205700), (110, 187000), (121, 170000), (125, 164560), (136, 151250), (170, 121000), (176, 116875), (187, 110000), (200, 102850), (220, 93500), (242, 85000), (250, 82280), (272, 75625), (275, 74800), (340, 60500), (374, 55000), (400, 51425), (425, 48400), (440, 46750), (484, 42500), (500, 41140), (550, 37400), (605, 34000), (625, 32912), (680, 30250), (748, 27500), (850, 24200), (880, 23375), (935, 22000), (968, 21250), (1000, 20570), (1100, 18700), (1210, 17000), (1250, 16456), (1360, 15125), (1375, 14960), (1496, 13750), (1700, 12100), (1870, 11000), (1936, 10625), (2000, 10285), (2057, 10000), (2125, 9680), (2200, 9350), (2420, 8500), (2500, 8228), (2750, 7480), (2992, 6875), (3025, 6800), (3400, 6050), (3740, 5500), (4114, 5000), (4250, 4840), (4400, 4675)]