81920440

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{292573}}^1$

素因数の和:292591

約数の個数: 32

約数和(自身を含む): 210653280

約数和(自身を除く): 128732840

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 292573, 585146, 1170292, 1462865, 2048011, 2340584, 2925730, 4096022, 5851460, 8192044, 10240055, 11702920, 16384088, 20480110, 40960220, 81920440]

約数ペア:

[(1, 81920440), (2, 40960220), (4, 20480110), (5, 16384088), (7, 11702920), (8, 10240055), (10, 8192044), (14, 5851460), (20, 4096022), (28, 2925730), (35, 2340584), (40, 2048011), (56, 1462865), (70, 1170292), (140, 585146), (280, 292573)]