21688800

素因数分解:

$2^5\times 3^1\times 5^2\times 7^1\times {\mathrm{1291}}^1$

素因数の和:1321

約数の個数: 144

約数和(自身を含む): 80744832

約数和(自身を除く): 59056032

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 25, 28, 30, 32, 35, 40, 42, 48, 50, 56, 60, 70, 75, 80, 84, 96, 100, 105, 112, 120, 140, 150, 160, 168, 175, 200, 210, 224, 240, 280, 300, 336, 350, 400, 420, 480, 525, 560, 600, 672, 700, 800, 840, 1050, 1120, 1200, 1291, 1400, 1680, 2100, 2400, 2582, 2800, 3360, 3873, 4200, 5164, 5600, 6455, 7746, 8400, 9037, 10328, 12910, 15492, 16800, 18074, 19365, 20656, 25820, 27111, 30984, 32275, 36148, 38730, 41312, 45185, 51640, 54222, 61968, 64550, 72296, 77460, 90370, 96825, 103280, 108444, 123936, 129100, 135555, 144592, 154920, 180740, 193650, 206560, 216888, 225925, 258200, 271110, 289184, 309840, 361480, 387300, 433776, 451850, 516400, 542220, 619680, 677775, 722960, 774600, 867552, 903700, 1032800, 1084440, 1355550, 1445920, 1549200, 1807400, 2168880, 2711100, 3098400, 3614800, 4337760, 5422200, 7229600, 10844400, 21688800]

約数ペア:

[(1, 21688800), (2, 10844400), (3, 7229600), (4, 5422200), (5, 4337760), (6, 3614800), (7, 3098400), (8, 2711100), (10, 2168880), (12, 1807400), (14, 1549200), (15, 1445920), (16, 1355550), (20, 1084440), (21, 1032800), (24, 903700), (25, 867552), (28, 774600), (30, 722960), (32, 677775), (35, 619680), (40, 542220), (42, 516400), (48, 451850), (50, 433776), (56, 387300), (60, 361480), (70, 309840), (75, 289184), (80, 271110), (84, 258200), (96, 225925), (100, 216888), (105, 206560), (112, 193650), (120, 180740), (140, 154920), (150, 144592), (160, 135555), (168, 129100), (175, 123936), (200, 108444), (210, 103280), (224, 96825), (240, 90370), (280, 77460), (300, 72296), (336, 64550), (350, 61968), (400, 54222), (420, 51640), (480, 45185), (525, 41312), (560, 38730), (600, 36148), (672, 32275), (700, 30984), (800, 27111), (840, 25820), (1050, 20656), (1120, 19365), (1200, 18074), (1291, 16800), (1400, 15492), (1680, 12910), (2100, 10328), (2400, 9037), (2582, 8400), (2800, 7746), (3360, 6455), (3873, 5600), (4200, 5164)]