20261600

素因数分解:

$2^5\times 5^2\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1$

素因数の和:113

約数の個数: 144

約数和(自身を含む): 54996480

約数和(自身を除く): 34734880

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 25, 31, 32, 38, 40, 43, 50, 62, 76, 80, 86, 95, 100, 124, 152, 155, 160, 172, 190, 200, 215, 248, 304, 310, 344, 380, 400, 430, 475, 496, 589, 608, 620, 688, 760, 775, 800, 817, 860, 950, 992, 1075, 1178, 1240, 1333, 1376, 1520, 1550, 1634, 1720, 1900, 2150, 2356, 2480, 2666, 2945, 3040, 3100, 3268, 3440, 3800, 4085, 4300, 4712, 4960, 5332, 5890, 6200, 6536, 6665, 6880, 7600, 8170, 8600, 9424, 10664, 11780, 12400, 13072, 13330, 14725, 15200, 16340, 17200, 18848, 20425, 21328, 23560, 24800, 25327, 26144, 26660, 29450, 32680, 33325, 34400, 40850, 42656, 47120, 50654, 53320, 58900, 65360, 66650, 81700, 94240, 101308, 106640, 117800, 126635, 130720, 133300, 163400, 202616, 213280, 235600, 253270, 266600, 326800, 405232, 471200, 506540, 533200, 633175, 653600, 810464, 1013080, 1066400, 1266350, 2026160, 2532700, 4052320, 5065400, 10130800, 20261600]

約数ペア:

[(1, 20261600), (2, 10130800), (4, 5065400), (5, 4052320), (8, 2532700), (10, 2026160), (16, 1266350), (19, 1066400), (20, 1013080), (25, 810464), (31, 653600), (32, 633175), (38, 533200), (40, 506540), (43, 471200), (50, 405232), (62, 326800), (76, 266600), (80, 253270), (86, 235600), (95, 213280), (100, 202616), (124, 163400), (152, 133300), (155, 130720), (160, 126635), (172, 117800), (190, 106640), (200, 101308), (215, 94240), (248, 81700), (304, 66650), (310, 65360), (344, 58900), (380, 53320), (400, 50654), (430, 47120), (475, 42656), (496, 40850), (589, 34400), (608, 33325), (620, 32680), (688, 29450), (760, 26660), (775, 26144), (800, 25327), (817, 24800), (860, 23560), (950, 21328), (992, 20425), (1075, 18848), (1178, 17200), (1240, 16340), (1333, 15200), (1376, 14725), (1520, 13330), (1550, 13072), (1634, 12400), (1720, 11780), (1900, 10664), (2150, 9424), (2356, 8600), (2480, 8170), (2666, 7600), (2945, 6880), (3040, 6665), (3100, 6536), (3268, 6200), (3440, 5890), (3800, 5332), (4085, 4960), (4300, 4712)]