805840

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{1439}}^1$

素因数の和:1459

約数の個数: 40

約数和(自身を含む): 2142720

約数和(自身を除く): 1336880

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 560, 1439, 2878, 5756, 7195, 10073, 11512, 14390, 20146, 23024, 28780, 40292, 50365, 57560, 80584, 100730, 115120, 161168, 201460, 402920, 805840]

約数ペア:

[(1, 805840), (2, 402920), (4, 201460), (5, 161168), (7, 115120), (8, 100730), (10, 80584), (14, 57560), (16, 50365), (20, 40292), (28, 28780), (35, 23024), (40, 20146), (56, 14390), (70, 11512), (80, 10073), (112, 7195), (140, 5756), (280, 2878), (560, 1439)]