81660880

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{145823}}^1$

素因数の和:145843

約数の個数: 40

約数和(自身を含む): 216986112

約数和(自身を除く): 135325232

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 560, 145823, 291646, 583292, 729115, 1020761, 1166584, 1458230, 2041522, 2333168, 2916460, 4083044, 5103805, 5832920, 8166088, 10207610, 11665840, 16332176, 20415220, 40830440, 81660880]

約数ペア:

[(1, 81660880), (2, 40830440), (4, 20415220), (5, 16332176), (7, 11665840), (8, 10207610), (10, 8166088), (14, 5832920), (16, 5103805), (20, 4083044), (28, 2916460), (35, 2333168), (40, 2041522), (56, 1458230), (70, 1166584), (80, 1020761), (112, 729115), (140, 583292), (280, 291646), (560, 145823)]