21811400

素因数分解:

$2^3\times 5^2\times {\mathrm{13}}^1\times {\mathrm{8389}}^1$

素因数の和:8418

約数の個数: 48

約数和(自身を含む): 54618900

約数和(自身を除く): 32807500

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 25, 26, 40, 50, 52, 65, 100, 104, 130, 200, 260, 325, 520, 650, 1300, 2600, 8389, 16778, 33556, 41945, 67112, 83890, 109057, 167780, 209725, 218114, 335560, 419450, 436228, 545285, 838900, 872456, 1090570, 1677800, 2181140, 2726425, 4362280, 5452850, 10905700, 21811400]

約数ペア:

[(1, 21811400), (2, 10905700), (4, 5452850), (5, 4362280), (8, 2726425), (10, 2181140), (13, 1677800), (20, 1090570), (25, 872456), (26, 838900), (40, 545285), (50, 436228), (52, 419450), (65, 335560), (100, 218114), (104, 209725), (130, 167780), (200, 109057), (260, 83890), (325, 67112), (520, 41945), (650, 33556), (1300, 16778), (2600, 8389)]