30990680

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{110681}}^1$

素因数の和:110699

約数の個数: 32

約数和(自身を含む): 79691040

約数和(自身を除く): 48700360

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 110681, 221362, 442724, 553405, 774767, 885448, 1106810, 1549534, 2213620, 3099068, 3873835, 4427240, 6198136, 7747670, 15495340, 30990680]

約数ペア:

[(1, 30990680), (2, 15495340), (4, 7747670), (5, 6198136), (7, 4427240), (8, 3873835), (10, 3099068), (14, 2213620), (20, 1549534), (28, 1106810), (35, 885448), (40, 774767), (56, 553405), (70, 442724), (140, 221362), (280, 110681)]