2820440

素因数分解:

$2^3\times 5^1\times 7^2\times {\mathrm{1439}}^1$

素因数の和:1464

約数の個数: 48

約数和(自身を含む): 7387200

約数和(自身を除く): 4566760

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 49, 56, 70, 98, 140, 196, 245, 280, 392, 490, 980, 1439, 1960, 2878, 5756, 7195, 10073, 11512, 14390, 20146, 28780, 40292, 50365, 57560, 70511, 80584, 100730, 141022, 201460, 282044, 352555, 402920, 564088, 705110, 1410220, 2820440]

約数ペア:

[(1, 2820440), (2, 1410220), (4, 705110), (5, 564088), (7, 402920), (8, 352555), (10, 282044), (14, 201460), (20, 141022), (28, 100730), (35, 80584), (40, 70511), (49, 57560), (56, 50365), (70, 40292), (98, 28780), (140, 20146), (196, 14390), (245, 11512), (280, 10073), (392, 7195), (490, 5756), (980, 2878), (1439, 1960)]