20700160

素因数分解:

$2^{10}\times 5^1\times {\mathrm{13}}^1\times {\mathrm{311}}^1$

素因数の和:349

約数の個数: 88

約数和(自身を含む): 53647776

約数和(自身を除く): 32947616

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 64, 65, 80, 104, 128, 130, 160, 208, 256, 260, 311, 320, 416, 512, 520, 622, 640, 832, 1024, 1040, 1244, 1280, 1555, 1664, 2080, 2488, 2560, 3110, 3328, 4043, 4160, 4976, 5120, 6220, 6656, 8086, 8320, 9952, 12440, 13312, 16172, 16640, 19904, 20215, 24880, 32344, 33280, 39808, 40430, 49760, 64688, 66560, 79616, 80860, 99520, 129376, 159232, 161720, 199040, 258752, 318464, 323440, 398080, 517504, 646880, 796160, 1035008, 1293760, 1592320, 2070016, 2587520, 4140032, 5175040, 10350080, 20700160]

約数ペア:

[(1, 20700160), (2, 10350080), (4, 5175040), (5, 4140032), (8, 2587520), (10, 2070016), (13, 1592320), (16, 1293760), (20, 1035008), (26, 796160), (32, 646880), (40, 517504), (52, 398080), (64, 323440), (65, 318464), (80, 258752), (104, 199040), (128, 161720), (130, 159232), (160, 129376), (208, 99520), (256, 80860), (260, 79616), (311, 66560), (320, 64688), (416, 49760), (512, 40430), (520, 39808), (622, 33280), (640, 32344), (832, 24880), (1024, 20215), (1040, 19904), (1244, 16640), (1280, 16172), (1555, 13312), (1664, 12440), (2080, 9952), (2488, 8320), (2560, 8086), (3110, 6656), (3328, 6220), (4043, 5120), (4160, 4976)]