20394880

素因数分解:

$2^7\times 5^1\times {\mathrm{11}}^1\times {\mathrm{2897}}^1$

素因数の和:2927

約数の個数: 64

約数和(自身を含む): 53207280

約数和(自身を除く): 32812400

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, 320, 352, 440, 640, 704, 880, 1408, 1760, 2897, 3520, 5794, 7040, 11588, 14485, 23176, 28970, 31867, 46352, 57940, 63734, 92704, 115880, 127468, 159335, 185408, 231760, 254936, 318670, 370816, 463520, 509872, 637340, 927040, 1019744, 1274680, 1854080, 2039488, 2549360, 4078976, 5098720, 10197440, 20394880]

約数ペア:

[(1, 20394880), (2, 10197440), (4, 5098720), (5, 4078976), (8, 2549360), (10, 2039488), (11, 1854080), (16, 1274680), (20, 1019744), (22, 927040), (32, 637340), (40, 509872), (44, 463520), (55, 370816), (64, 318670), (80, 254936), (88, 231760), (110, 185408), (128, 159335), (160, 127468), (176, 115880), (220, 92704), (320, 63734), (352, 57940), (440, 46352), (640, 31867), (704, 28970), (880, 23176), (1408, 14485), (1760, 11588), (2897, 7040), (3520, 5794)]