19979604

素因数分解:

$2^2\times 3^2\times {\mathrm{739}}^1\times {\mathrm{751}}^1$

素因数の和:1500

約数の個数: 36

約数和(自身を含む): 50639680

約数和(自身を除く): 30660076

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 739, 751, 1478, 1502, 2217, 2253, 2956, 3004, 4434, 4506, 6651, 6759, 8868, 9012, 13302, 13518, 26604, 27036, 554989, 1109978, 1664967, 2219956, 3329934, 4994901, 6659868, 9989802, 19979604]

約数ペア:

[(1, 19979604), (2, 9989802), (3, 6659868), (4, 4994901), (6, 3329934), (9, 2219956), (12, 1664967), (18, 1109978), (36, 554989), (739, 27036), (751, 26604), (1478, 13518), (1502, 13302), (2217, 9012), (2253, 8868), (2956, 6759), (3004, 6651), (4434, 4506)]