81812500

素因数分解:

$2^2\times 5^6\times 7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1$

素因数の和:69

約数の個数: 168

約数和(自身を含む): 236246976

約数和(自身を除く): 154434476

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 17, 20, 22, 25, 28, 34, 35, 44, 50, 55, 68, 70, 77, 85, 100, 110, 119, 125, 140, 154, 170, 175, 187, 220, 238, 250, 275, 308, 340, 350, 374, 385, 425, 476, 500, 550, 595, 625, 700, 748, 770, 850, 875, 935, 1100, 1190, 1250, 1309, 1375, 1540, 1700, 1750, 1870, 1925, 2125, 2380, 2500, 2618, 2750, 2975, 3125, 3500, 3740, 3850, 4250, 4375, 4675, 5236, 5500, 5950, 6250, 6545, 6875, 7700, 8500, 8750, 9350, 9625, 10625, 11900, 12500, 13090, 13750, 14875, 15625, 17500, 18700, 19250, 21250, 21875, 23375, 26180, 27500, 29750, 31250, 32725, 34375, 38500, 42500, 43750, 46750, 48125, 53125, 59500, 62500, 65450, 68750, 74375, 87500, 93500, 96250, 106250, 109375, 116875, 130900, 137500, 148750, 163625, 171875, 192500, 212500, 218750, 233750, 240625, 265625, 297500, 327250, 343750, 371875, 437500, 467500, 481250, 531250, 584375, 654500, 687500, 743750, 818125, 962500, 1062500, 1168750, 1203125, 1487500, 1636250, 1859375, 2337500, 2406250, 2921875, 3272500, 3718750, 4090625, 4812500, 5843750, 7437500, 8181250, 11687500, 16362500, 20453125, 40906250, 81812500]

約数ペア:

[(1, 81812500), (2, 40906250), (4, 20453125), (5, 16362500), (7, 11687500), (10, 8181250), (11, 7437500), (14, 5843750), (17, 4812500), (20, 4090625), (22, 3718750), (25, 3272500), (28, 2921875), (34, 2406250), (35, 2337500), (44, 1859375), (50, 1636250), (55, 1487500), (68, 1203125), (70, 1168750), (77, 1062500), (85, 962500), (100, 818125), (110, 743750), (119, 687500), (125, 654500), (140, 584375), (154, 531250), (170, 481250), (175, 467500), (187, 437500), (220, 371875), (238, 343750), (250, 327250), (275, 297500), (308, 265625), (340, 240625), (350, 233750), (374, 218750), (385, 212500), (425, 192500), (476, 171875), (500, 163625), (550, 148750), (595, 137500), (625, 130900), (700, 116875), (748, 109375), (770, 106250), (850, 96250), (875, 93500), (935, 87500), (1100, 74375), (1190, 68750), (1250, 65450), (1309, 62500), (1375, 59500), (1540, 53125), (1700, 48125), (1750, 46750), (1870, 43750), (1925, 42500), (2125, 38500), (2380, 34375), (2500, 32725), (2618, 31250), (2750, 29750), (2975, 27500), (3125, 26180), (3500, 23375), (3740, 21875), (3850, 21250), (4250, 19250), (4375, 18700), (4675, 17500), (5236, 15625), (5500, 14875), (5950, 13750), (6250, 13090), (6545, 12500), (6875, 11900), (7700, 10625), (8500, 9625), (8750, 9350)]