256804000

素因数分解:

$2^5\times 5^3\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{109}}^1$

素因数の和:184

約数の個数: 192

約数和(自身を含む): 691891200

約数和(自身を除く): 435087200

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 25, 31, 32, 38, 40, 50, 62, 76, 80, 95, 100, 109, 124, 125, 152, 155, 160, 190, 200, 218, 248, 250, 304, 310, 380, 400, 436, 475, 496, 500, 545, 589, 608, 620, 760, 775, 800, 872, 950, 992, 1000, 1090, 1178, 1240, 1520, 1550, 1744, 1900, 2000, 2071, 2180, 2356, 2375, 2480, 2725, 2945, 3040, 3100, 3379, 3488, 3800, 3875, 4000, 4142, 4360, 4712, 4750, 4960, 5450, 5890, 6200, 6758, 7600, 7750, 8284, 8720, 9424, 9500, 10355, 10900, 11780, 12400, 13516, 13625, 14725, 15200, 15500, 16568, 16895, 17440, 18848, 19000, 20710, 21800, 23560, 24800, 27032, 27250, 29450, 31000, 33136, 33790, 38000, 41420, 43600, 47120, 51775, 54064, 54500, 58900, 62000, 64201, 66272, 67580, 73625, 76000, 82840, 84475, 87200, 94240, 103550, 108128, 109000, 117800, 124000, 128402, 135160, 147250, 165680, 168950, 207100, 218000, 235600, 256804, 258875, 270320, 294500, 321005, 331360, 337900, 414200, 422375, 436000, 471200, 513608, 517750, 540640, 589000, 642010, 675800, 828400, 844750, 1027216, 1035500, 1178000, 1284020, 1351600, 1605025, 1656800, 1689500, 2054432, 2071000, 2356000, 2568040, 2703200, 3210050, 3379000, 4142000, 5136080, 6420100, 6758000, 8025125, 8284000, 10272160, 12840200, 13516000, 16050250, 25680400, 32100500, 51360800, 64201000, 128402000, 256804000]

約数ペア:

[(1, 256804000), (2, 128402000), (4, 64201000), (5, 51360800), (8, 32100500), (10, 25680400), (16, 16050250), (19, 13516000), (20, 12840200), (25, 10272160), (31, 8284000), (32, 8025125), (38, 6758000), (40, 6420100), (50, 5136080), (62, 4142000), (76, 3379000), (80, 3210050), (95, 2703200), (100, 2568040), (109, 2356000), (124, 2071000), (125, 2054432), (152, 1689500), (155, 1656800), (160, 1605025), (190, 1351600), (200, 1284020), (218, 1178000), (248, 1035500), (250, 1027216), (304, 844750), (310, 828400), (380, 675800), (400, 642010), (436, 589000), (475, 540640), (496, 517750), (500, 513608), (545, 471200), (589, 436000), (608, 422375), (620, 414200), (760, 337900), (775, 331360), (800, 321005), (872, 294500), (950, 270320), (992, 258875), (1000, 256804), (1090, 235600), (1178, 218000), (1240, 207100), (1520, 168950), (1550, 165680), (1744, 147250), (1900, 135160), (2000, 128402), (2071, 124000), (2180, 117800), (2356, 109000), (2375, 108128), (2480, 103550), (2725, 94240), (2945, 87200), (3040, 84475), (3100, 82840), (3379, 76000), (3488, 73625), (3800, 67580), (3875, 66272), (4000, 64201), (4142, 62000), (4360, 58900), (4712, 54500), (4750, 54064), (4960, 51775), (5450, 47120), (5890, 43600), (6200, 41420), (6758, 38000), (7600, 33790), (7750, 33136), (8284, 31000), (8720, 29450), (9424, 27250), (9500, 27032), (10355, 24800), (10900, 23560), (11780, 21800), (12400, 20710), (13516, 19000), (13625, 18848), (14725, 17440), (15200, 16895), (15500, 16568)]