40385280

素因数分解:

$2^8\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{809}}^1$

素因数の和:846

約数の個数: 144

約数和(自身を含む): 139073760

約数和(自身を除く): 98688480

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 16, 20, 24, 26, 30, 32, 39, 40, 48, 52, 60, 64, 65, 78, 80, 96, 104, 120, 128, 130, 156, 160, 192, 195, 208, 240, 256, 260, 312, 320, 384, 390, 416, 480, 520, 624, 640, 768, 780, 809, 832, 960, 1040, 1248, 1280, 1560, 1618, 1664, 1920, 2080, 2427, 2496, 3120, 3236, 3328, 3840, 4045, 4160, 4854, 4992, 6240, 6472, 8090, 8320, 9708, 9984, 10517, 12135, 12480, 12944, 16180, 16640, 19416, 21034, 24270, 24960, 25888, 31551, 32360, 38832, 42068, 48540, 49920, 51776, 52585, 63102, 64720, 77664, 84136, 97080, 103552, 105170, 126204, 129440, 155328, 157755, 168272, 194160, 207104, 210340, 252408, 258880, 310656, 315510, 336544, 388320, 420680, 504816, 517760, 621312, 631020, 673088, 776640, 841360, 1009632, 1035520, 1262040, 1346176, 1553280, 1682720, 2019264, 2524080, 2692352, 3106560, 3365440, 4038528, 5048160, 6730880, 8077056, 10096320, 13461760, 20192640, 40385280]

約数ペア:

[(1, 40385280), (2, 20192640), (3, 13461760), (4, 10096320), (5, 8077056), (6, 6730880), (8, 5048160), (10, 4038528), (12, 3365440), (13, 3106560), (15, 2692352), (16, 2524080), (20, 2019264), (24, 1682720), (26, 1553280), (30, 1346176), (32, 1262040), (39, 1035520), (40, 1009632), (48, 841360), (52, 776640), (60, 673088), (64, 631020), (65, 621312), (78, 517760), (80, 504816), (96, 420680), (104, 388320), (120, 336544), (128, 315510), (130, 310656), (156, 258880), (160, 252408), (192, 210340), (195, 207104), (208, 194160), (240, 168272), (256, 157755), (260, 155328), (312, 129440), (320, 126204), (384, 105170), (390, 103552), (416, 97080), (480, 84136), (520, 77664), (624, 64720), (640, 63102), (768, 52585), (780, 51776), (809, 49920), (832, 48540), (960, 42068), (1040, 38832), (1248, 32360), (1280, 31551), (1560, 25888), (1618, 24960), (1664, 24270), (1920, 21034), (2080, 19416), (2427, 16640), (2496, 16180), (3120, 12944), (3236, 12480), (3328, 12135), (3840, 10517), (4045, 9984), (4160, 9708), (4854, 8320), (4992, 8090), (6240, 6472)]