81556480

素因数分解:

$2^{10}\times 5^1\times {\mathrm{17}}^1\times {\mathrm{937}}^1$

素因数の和:979

約数の個数: 88

約数和(自身を含む): 207369288

約数和(自身を除く): 125812808

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 32, 34, 40, 64, 68, 80, 85, 128, 136, 160, 170, 256, 272, 320, 340, 512, 544, 640, 680, 937, 1024, 1088, 1280, 1360, 1874, 2176, 2560, 2720, 3748, 4352, 4685, 5120, 5440, 7496, 8704, 9370, 10880, 14992, 15929, 17408, 18740, 21760, 29984, 31858, 37480, 43520, 59968, 63716, 74960, 79645, 87040, 119936, 127432, 149920, 159290, 239872, 254864, 299840, 318580, 479744, 509728, 599680, 637160, 959488, 1019456, 1199360, 1274320, 2038912, 2398720, 2548640, 4077824, 4797440, 5097280, 8155648, 10194560, 16311296, 20389120, 40778240, 81556480]

約数ペア:

[(1, 81556480), (2, 40778240), (4, 20389120), (5, 16311296), (8, 10194560), (10, 8155648), (16, 5097280), (17, 4797440), (20, 4077824), (32, 2548640), (34, 2398720), (40, 2038912), (64, 1274320), (68, 1199360), (80, 1019456), (85, 959488), (128, 637160), (136, 599680), (160, 509728), (170, 479744), (256, 318580), (272, 299840), (320, 254864), (340, 239872), (512, 159290), (544, 149920), (640, 127432), (680, 119936), (937, 87040), (1024, 79645), (1088, 74960), (1280, 63716), (1360, 59968), (1874, 43520), (2176, 37480), (2560, 31858), (2720, 29984), (3748, 21760), (4352, 18740), (4685, 17408), (5120, 15929), (5440, 14992), (7496, 10880), (8704, 9370)]