20456590

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{857}}^1$

素因数の和:913

約数の個数: 64

約数和(自身を含む): 47443968

約数和(自身を除く): 26987378

約数列:

[1, 2, 5, 7, 10, 11, 14, 22, 31, 35, 55, 62, 70, 77, 110, 154, 155, 217, 310, 341, 385, 434, 682, 770, 857, 1085, 1705, 1714, 2170, 2387, 3410, 4285, 4774, 5999, 8570, 9427, 11935, 11998, 18854, 23870, 26567, 29995, 47135, 53134, 59990, 65989, 94270, 131978, 132835, 185969, 265670, 292237, 329945, 371938, 584474, 659890, 929845, 1461185, 1859690, 2045659, 2922370, 4091318, 10228295, 20456590]

約数ペア:

[(1, 20456590), (2, 10228295), (5, 4091318), (7, 2922370), (10, 2045659), (11, 1859690), (14, 1461185), (22, 929845), (31, 659890), (35, 584474), (55, 371938), (62, 329945), (70, 292237), (77, 265670), (110, 185969), (154, 132835), (155, 131978), (217, 94270), (310, 65989), (341, 59990), (385, 53134), (434, 47135), (682, 29995), (770, 26567), (857, 23870), (1085, 18854), (1705, 11998), (1714, 11935), (2170, 9427), (2387, 8570), (3410, 5999), (4285, 4774)]