7808780

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{17}}^2\times {\mathrm{193}}^1$

素因数の和:243

約数の個数: 72

約数和(自身を含む): 20011488

約数和(自身を除く): 12202708

約数列:

[1, 2, 4, 5, 7, 10, 14, 17, 20, 28, 34, 35, 68, 70, 85, 119, 140, 170, 193, 238, 289, 340, 386, 476, 578, 595, 772, 965, 1156, 1190, 1351, 1445, 1930, 2023, 2380, 2702, 2890, 3281, 3860, 4046, 5404, 5780, 6562, 6755, 8092, 10115, 13124, 13510, 16405, 20230, 22967, 27020, 32810, 40460, 45934, 55777, 65620, 91868, 111554, 114835, 223108, 229670, 278885, 390439, 459340, 557770, 780878, 1115540, 1561756, 1952195, 3904390, 7808780]

約数ペア:

[(1, 7808780), (2, 3904390), (4, 1952195), (5, 1561756), (7, 1115540), (10, 780878), (14, 557770), (17, 459340), (20, 390439), (28, 278885), (34, 229670), (35, 223108), (68, 114835), (70, 111554), (85, 91868), (119, 65620), (140, 55777), (170, 45934), (193, 40460), (238, 32810), (289, 27020), (340, 22967), (386, 20230), (476, 16405), (578, 13510), (595, 13124), (772, 10115), (965, 8092), (1156, 6755), (1190, 6562), (1351, 5780), (1445, 5404), (1930, 4046), (2023, 3860), (2380, 3281), (2702, 2890)]