20371356

素因数分解:

$2^2\times 3^2\times {\mathrm{439}}^1\times {\mathrm{1289}}^1$

素因数の和:1738

約数の個数: 36

約数和(自身を含む): 51651600

約数和(自身を除く): 31280244

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 439, 878, 1289, 1317, 1756, 2578, 2634, 3867, 3951, 5156, 5268, 7734, 7902, 11601, 15468, 15804, 23202, 46404, 565871, 1131742, 1697613, 2263484, 3395226, 5092839, 6790452, 10185678, 20371356]

約数ペア:

[(1, 20371356), (2, 10185678), (3, 6790452), (4, 5092839), (6, 3395226), (9, 2263484), (12, 1697613), (18, 1131742), (36, 565871), (439, 46404), (878, 23202), (1289, 15804), (1317, 15468), (1756, 11601), (2578, 7902), (2634, 7734), (3867, 5268), (3951, 5156)]