71281840

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{127289}}^1$

素因数の和:127309

約数の個数: 40

約数和(自身を含む): 189407520

約数和(自身を除く): 118125680

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 560, 127289, 254578, 509156, 636445, 891023, 1018312, 1272890, 1782046, 2036624, 2545780, 3564092, 4455115, 5091560, 7128184, 8910230, 10183120, 14256368, 17820460, 35640920, 71281840]

約数ペア:

[(1, 71281840), (2, 35640920), (4, 17820460), (5, 14256368), (7, 10183120), (8, 8910230), (10, 7128184), (14, 5091560), (16, 4455115), (20, 3564092), (28, 2545780), (35, 2036624), (40, 1782046), (56, 1272890), (70, 1018312), (80, 891023), (112, 636445), (140, 509156), (280, 254578), (560, 127289)]