20669440

素因数分解:

$2^{10}\times 5^1\times {\mathrm{11}}^1\times {\mathrm{367}}^1$

素因数の和:403

約数の個数: 88

約数和(自身を含む): 54237312

約数和(自身を除く): 33567872

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 32, 40, 44, 55, 64, 80, 88, 110, 128, 160, 176, 220, 256, 320, 352, 367, 440, 512, 640, 704, 734, 880, 1024, 1280, 1408, 1468, 1760, 1835, 2560, 2816, 2936, 3520, 3670, 4037, 5120, 5632, 5872, 7040, 7340, 8074, 11264, 11744, 14080, 14680, 16148, 20185, 23488, 28160, 29360, 32296, 40370, 46976, 56320, 58720, 64592, 80740, 93952, 117440, 129184, 161480, 187904, 234880, 258368, 322960, 375808, 469760, 516736, 645920, 939520, 1033472, 1291840, 1879040, 2066944, 2583680, 4133888, 5167360, 10334720, 20669440]

約数ペア:

[(1, 20669440), (2, 10334720), (4, 5167360), (5, 4133888), (8, 2583680), (10, 2066944), (11, 1879040), (16, 1291840), (20, 1033472), (22, 939520), (32, 645920), (40, 516736), (44, 469760), (55, 375808), (64, 322960), (80, 258368), (88, 234880), (110, 187904), (128, 161480), (160, 129184), (176, 117440), (220, 93952), (256, 80740), (320, 64592), (352, 58720), (367, 56320), (440, 46976), (512, 40370), (640, 32296), (704, 29360), (734, 28160), (880, 23488), (1024, 20185), (1280, 16148), (1408, 14680), (1468, 14080), (1760, 11744), (1835, 11264), (2560, 8074), (2816, 7340), (2936, 7040), (3520, 5872), (3670, 5632), (4037, 5120)]