1691620

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{281}}^1$

素因数の和:340

約数の個数: 48

約数和(自身を含む): 4169088

約数和(自身を除く): 2477468

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 43, 70, 86, 140, 172, 215, 281, 301, 430, 562, 602, 860, 1124, 1204, 1405, 1505, 1967, 2810, 3010, 3934, 5620, 6020, 7868, 9835, 12083, 19670, 24166, 39340, 48332, 60415, 84581, 120830, 169162, 241660, 338324, 422905, 845810, 1691620]

約数ペア:

[(1, 1691620), (2, 845810), (4, 422905), (5, 338324), (7, 241660), (10, 169162), (14, 120830), (20, 84581), (28, 60415), (35, 48332), (43, 39340), (70, 24166), (86, 19670), (140, 12083), (172, 9835), (215, 7868), (281, 6020), (301, 5620), (430, 3934), (562, 3010), (602, 2810), (860, 1967), (1124, 1505), (1204, 1405)]