28707420

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{68351}}^1$

素因数の和:68370

約数の個数: 48

約数和(自身を含む): 91865088

約数和(自身を除く): 63157668

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 68351, 136702, 205053, 273404, 341755, 410106, 478457, 683510, 820212, 956914, 1025265, 1367020, 1435371, 1913828, 2050530, 2392285, 2870742, 4101060, 4784570, 5741484, 7176855, 9569140, 14353710, 28707420]

約数ペア:

[(1, 28707420), (2, 14353710), (3, 9569140), (4, 7176855), (5, 5741484), (6, 4784570), (7, 4101060), (10, 2870742), (12, 2392285), (14, 2050530), (15, 1913828), (20, 1435371), (21, 1367020), (28, 1025265), (30, 956914), (35, 820212), (42, 683510), (60, 478457), (70, 410106), (84, 341755), (105, 273404), (140, 205053), (210, 136702), (420, 68351)]