16668520

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{881}}^1$

素因数の和:946

約数の個数: 64

約数和(自身を含む): 41912640

約数和(自身を除く): 25244120

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 43, 44, 55, 86, 88, 110, 172, 215, 220, 344, 430, 440, 473, 860, 881, 946, 1720, 1762, 1892, 2365, 3524, 3784, 4405, 4730, 7048, 8810, 9460, 9691, 17620, 18920, 19382, 35240, 37883, 38764, 48455, 75766, 77528, 96910, 151532, 189415, 193820, 303064, 378830, 387640, 416713, 757660, 833426, 1515320, 1666852, 2083565, 3333704, 4167130, 8334260, 16668520]

約数ペア:

[(1, 16668520), (2, 8334260), (4, 4167130), (5, 3333704), (8, 2083565), (10, 1666852), (11, 1515320), (20, 833426), (22, 757660), (40, 416713), (43, 387640), (44, 378830), (55, 303064), (86, 193820), (88, 189415), (110, 151532), (172, 96910), (215, 77528), (220, 75766), (344, 48455), (430, 38764), (440, 37883), (473, 35240), (860, 19382), (881, 18920), (946, 17620), (1720, 9691), (1762, 9460), (1892, 8810), (2365, 7048), (3524, 4730), (3784, 4405)]