20867660

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{8623}}^1$

素因数の和:8654

約数の個数: 36

約数和(自身を含む): 48173664

約数和(自身を除く): 27306004

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 121, 220, 242, 484, 605, 1210, 2420, 8623, 17246, 34492, 43115, 86230, 94853, 172460, 189706, 379412, 474265, 948530, 1043383, 1897060, 2086766, 4173532, 5216915, 10433830, 20867660]

約数ペア:

[(1, 20867660), (2, 10433830), (4, 5216915), (5, 4173532), (10, 2086766), (11, 1897060), (20, 1043383), (22, 948530), (44, 474265), (55, 379412), (110, 189706), (121, 172460), (220, 94853), (242, 86230), (484, 43115), (605, 34492), (1210, 17246), (2420, 8623)]