687140

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{47}}^1$

素因数の和:116

約数の個数: 48

約数和(自身を含む): 1596672

約数和(自身を除く): 909532

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 43, 47, 68, 85, 86, 94, 170, 172, 188, 215, 235, 340, 430, 470, 731, 799, 860, 940, 1462, 1598, 2021, 2924, 3196, 3655, 3995, 4042, 7310, 7990, 8084, 10105, 14620, 15980, 20210, 34357, 40420, 68714, 137428, 171785, 343570, 687140]

約数ペア:

[(1, 687140), (2, 343570), (4, 171785), (5, 137428), (10, 68714), (17, 40420), (20, 34357), (34, 20210), (43, 15980), (47, 14620), (68, 10105), (85, 8084), (86, 7990), (94, 7310), (170, 4042), (172, 3995), (188, 3655), (215, 3196), (235, 2924), (340, 2021), (430, 1598), (470, 1462), (731, 940), (799, 860)]