21130845

素因数分解:

$3^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{181}}^2$

素因数の和:413

約数の個数: 24

約数和(自身を含む): 34787808

約数和(自身を除く): 13656963

約数列:

[1, 3, 5, 15, 43, 129, 181, 215, 543, 645, 905, 2715, 7783, 23349, 32761, 38915, 98283, 116745, 163805, 491415, 1408723, 4226169, 7043615, 21130845]

約数ペア:

[(1, 21130845), (3, 7043615), (5, 4226169), (15, 1408723), (43, 491415), (129, 163805), (181, 116745), (215, 98283), (543, 38915), (645, 32761), (905, 23349), (2715, 7783)]