81222400

素因数分解:

$2^8\times 5^2\times 7^3\times {\mathrm{37}}^1$

素因数の和:84

約数の個数: 216

約数和(自身を含む): 240783200

約数和(自身を除く): 159560800

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 25, 28, 32, 35, 37, 40, 49, 50, 56, 64, 70, 74, 80, 98, 100, 112, 128, 140, 148, 160, 175, 185, 196, 200, 224, 245, 256, 259, 280, 296, 320, 343, 350, 370, 392, 400, 448, 490, 518, 560, 592, 640, 686, 700, 740, 784, 800, 896, 925, 980, 1036, 1120, 1184, 1225, 1280, 1295, 1372, 1400, 1480, 1568, 1600, 1715, 1792, 1813, 1850, 1960, 2072, 2240, 2368, 2450, 2590, 2744, 2800, 2960, 3136, 3200, 3430, 3626, 3700, 3920, 4144, 4480, 4736, 4900, 5180, 5488, 5600, 5920, 6272, 6400, 6475, 6860, 7252, 7400, 7840, 8288, 8575, 8960, 9065, 9472, 9800, 10360, 10976, 11200, 11840, 12544, 12691, 12950, 13720, 14504, 14800, 15680, 16576, 17150, 18130, 19600, 20720, 21952, 22400, 23680, 25382, 25900, 27440, 29008, 29600, 31360, 33152, 34300, 36260, 39200, 41440, 43904, 44800, 45325, 47360, 50764, 51800, 54880, 58016, 59200, 62720, 63455, 66304, 68600, 72520, 78400, 82880, 87808, 90650, 101528, 103600, 109760, 116032, 118400, 126910, 137200, 145040, 156800, 165760, 181300, 203056, 207200, 219520, 232064, 236800, 253820, 274400, 290080, 313600, 317275, 331520, 362600, 406112, 414400, 439040, 464128, 507640, 548800, 580160, 634550, 725200, 812224, 828800, 1015280, 1097600, 1160320, 1269100, 1450400, 1624448, 1657600, 2030560, 2195200, 2320640, 2538200, 2900800, 3248896, 4061120, 5076400, 5801600, 8122240, 10152800, 11603200, 16244480, 20305600, 40611200, 81222400]

約数ペア:

[(1, 81222400), (2, 40611200), (4, 20305600), (5, 16244480), (7, 11603200), (8, 10152800), (10, 8122240), (14, 5801600), (16, 5076400), (20, 4061120), (25, 3248896), (28, 2900800), (32, 2538200), (35, 2320640), (37, 2195200), (40, 2030560), (49, 1657600), (50, 1624448), (56, 1450400), (64, 1269100), (70, 1160320), (74, 1097600), (80, 1015280), (98, 828800), (100, 812224), (112, 725200), (128, 634550), (140, 580160), (148, 548800), (160, 507640), (175, 464128), (185, 439040), (196, 414400), (200, 406112), (224, 362600), (245, 331520), (256, 317275), (259, 313600), (280, 290080), (296, 274400), (320, 253820), (343, 236800), (350, 232064), (370, 219520), (392, 207200), (400, 203056), (448, 181300), (490, 165760), (518, 156800), (560, 145040), (592, 137200), (640, 126910), (686, 118400), (700, 116032), (740, 109760), (784, 103600), (800, 101528), (896, 90650), (925, 87808), (980, 82880), (1036, 78400), (1120, 72520), (1184, 68600), (1225, 66304), (1280, 63455), (1295, 62720), (1372, 59200), (1400, 58016), (1480, 54880), (1568, 51800), (1600, 50764), (1715, 47360), (1792, 45325), (1813, 44800), (1850, 43904), (1960, 41440), (2072, 39200), (2240, 36260), (2368, 34300), (2450, 33152), (2590, 31360), (2744, 29600), (2800, 29008), (2960, 27440), (3136, 25900), (3200, 25382), (3430, 23680), (3626, 22400), (3700, 21952), (3920, 20720), (4144, 19600), (4480, 18130), (4736, 17150), (4900, 16576), (5180, 15680), (5488, 14800), (5600, 14504), (5920, 13720), (6272, 12950), (6400, 12691), (6475, 12544), (6860, 11840), (7252, 11200), (7400, 10976), (7840, 10360), (8288, 9800), (8575, 9472), (8960, 9065)]