20235880

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{72271}}^1$

素因数の和:72289

約数の個数: 32

約数和(自身を含む): 52035840

約数和(自身を除く): 31799960

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 72271, 144542, 289084, 361355, 505897, 578168, 722710, 1011794, 1445420, 2023588, 2529485, 2890840, 4047176, 5058970, 10117940, 20235880]

約数ペア:

[(1, 20235880), (2, 10117940), (4, 5058970), (5, 4047176), (7, 2890840), (8, 2529485), (10, 2023588), (14, 1445420), (20, 1011794), (28, 722710), (35, 578168), (40, 505897), (56, 361355), (70, 289084), (140, 144542), (280, 72271)]