20016590

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{283}}^1\times {\mathrm{643}}^1$

素因数の和:944

約数の個数: 32

約数和(自身を含む): 39505536

約数和(自身を除く): 19488946

約数列:

[1, 2, 5, 10, 11, 22, 55, 110, 283, 566, 643, 1286, 1415, 2830, 3113, 3215, 6226, 6430, 7073, 14146, 15565, 31130, 35365, 70730, 181969, 363938, 909845, 1819690, 2001659, 4003318, 10008295, 20016590]

約数ペア:

[(1, 20016590), (2, 10008295), (5, 4003318), (10, 2001659), (11, 1819690), (22, 909845), (55, 363938), (110, 181969), (283, 70730), (566, 35365), (643, 31130), (1286, 15565), (1415, 14146), (2830, 7073), (3113, 6430), (3215, 6226)]