81932800

素因数分解:

$2^9\times 5^2\times {\mathrm{37}}^1\times {\mathrm{173}}^1$

素因数の和:238

約数の個数: 120

約数和(自身を含む): 209686356

約数和(自身を除く): 127753556

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 37, 40, 50, 64, 74, 80, 100, 128, 148, 160, 173, 185, 200, 256, 296, 320, 346, 370, 400, 512, 592, 640, 692, 740, 800, 865, 925, 1184, 1280, 1384, 1480, 1600, 1730, 1850, 2368, 2560, 2768, 2960, 3200, 3460, 3700, 4325, 4736, 5536, 5920, 6400, 6401, 6920, 7400, 8650, 9472, 11072, 11840, 12800, 12802, 13840, 14800, 17300, 18944, 22144, 23680, 25604, 27680, 29600, 32005, 34600, 44288, 47360, 51208, 55360, 59200, 64010, 69200, 88576, 94720, 102416, 110720, 118400, 128020, 138400, 160025, 204832, 221440, 236800, 256040, 276800, 320050, 409664, 442880, 473600, 512080, 553600, 640100, 819328, 1024160, 1107200, 1280200, 1638656, 2048320, 2214400, 2560400, 3277312, 4096640, 5120800, 8193280, 10241600, 16386560, 20483200, 40966400, 81932800]

約数ペア:

[(1, 81932800), (2, 40966400), (4, 20483200), (5, 16386560), (8, 10241600), (10, 8193280), (16, 5120800), (20, 4096640), (25, 3277312), (32, 2560400), (37, 2214400), (40, 2048320), (50, 1638656), (64, 1280200), (74, 1107200), (80, 1024160), (100, 819328), (128, 640100), (148, 553600), (160, 512080), (173, 473600), (185, 442880), (200, 409664), (256, 320050), (296, 276800), (320, 256040), (346, 236800), (370, 221440), (400, 204832), (512, 160025), (592, 138400), (640, 128020), (692, 118400), (740, 110720), (800, 102416), (865, 94720), (925, 88576), (1184, 69200), (1280, 64010), (1384, 59200), (1480, 55360), (1600, 51208), (1730, 47360), (1850, 44288), (2368, 34600), (2560, 32005), (2768, 29600), (2960, 27680), (3200, 25604), (3460, 23680), (3700, 22144), (4325, 18944), (4736, 17300), (5536, 14800), (5920, 13840), (6400, 12802), (6401, 12800), (6920, 11840), (7400, 11072), (8650, 9472)]