21920800

素因数分解:

$2^5\times 5^2\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{53}}^1$

素因数の和:131

約数の個数: 144

約数和(自身を含む): 60746112

約数和(自身を除く): 38825312

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 25, 32, 40, 44, 47, 50, 53, 55, 80, 88, 94, 100, 106, 110, 160, 176, 188, 200, 212, 220, 235, 265, 275, 352, 376, 400, 424, 440, 470, 517, 530, 550, 583, 752, 800, 848, 880, 940, 1034, 1060, 1100, 1166, 1175, 1325, 1504, 1696, 1760, 1880, 2068, 2120, 2200, 2332, 2350, 2491, 2585, 2650, 2915, 3760, 4136, 4240, 4400, 4664, 4700, 4982, 5170, 5300, 5830, 7520, 8272, 8480, 8800, 9328, 9400, 9964, 10340, 10600, 11660, 12455, 12925, 14575, 16544, 18656, 18800, 19928, 20680, 21200, 23320, 24910, 25850, 27401, 29150, 37600, 39856, 41360, 42400, 46640, 49820, 51700, 54802, 58300, 62275, 79712, 82720, 93280, 99640, 103400, 109604, 116600, 124550, 137005, 199280, 206800, 219208, 233200, 249100, 274010, 398560, 413600, 438416, 466400, 498200, 548020, 685025, 876832, 996400, 1096040, 1370050, 1992800, 2192080, 2740100, 4384160, 5480200, 10960400, 21920800]

約数ペア:

[(1, 21920800), (2, 10960400), (4, 5480200), (5, 4384160), (8, 2740100), (10, 2192080), (11, 1992800), (16, 1370050), (20, 1096040), (22, 996400), (25, 876832), (32, 685025), (40, 548020), (44, 498200), (47, 466400), (50, 438416), (53, 413600), (55, 398560), (80, 274010), (88, 249100), (94, 233200), (100, 219208), (106, 206800), (110, 199280), (160, 137005), (176, 124550), (188, 116600), (200, 109604), (212, 103400), (220, 99640), (235, 93280), (265, 82720), (275, 79712), (352, 62275), (376, 58300), (400, 54802), (424, 51700), (440, 49820), (470, 46640), (517, 42400), (530, 41360), (550, 39856), (583, 37600), (752, 29150), (800, 27401), (848, 25850), (880, 24910), (940, 23320), (1034, 21200), (1060, 20680), (1100, 19928), (1166, 18800), (1175, 18656), (1325, 16544), (1504, 14575), (1696, 12925), (1760, 12455), (1880, 11660), (2068, 10600), (2120, 10340), (2200, 9964), (2332, 9400), (2350, 9328), (2491, 8800), (2585, 8480), (2650, 8272), (2915, 7520), (3760, 5830), (4136, 5300), (4240, 5170), (4400, 4982), (4664, 4700)]