209488020

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{498781}}^1$

素因数の和:498800

約数の個数: 48

約数和(自身を含む): 670363008

約数和(自身を除く): 460874988

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, 498781, 997562, 1496343, 1995124, 2493905, 2992686, 3491467, 4987810, 5985372, 6982934, 7481715, 9975620, 10474401, 13965868, 14963430, 17457335, 20948802, 29926860, 34914670, 41897604, 52372005, 69829340, 104744010, 209488020]

約数ペア:

[(1, 209488020), (2, 104744010), (3, 69829340), (4, 52372005), (5, 41897604), (6, 34914670), (7, 29926860), (10, 20948802), (12, 17457335), (14, 14963430), (15, 13965868), (20, 10474401), (21, 9975620), (28, 7481715), (30, 6982934), (35, 5985372), (42, 4987810), (60, 3491467), (70, 2992686), (84, 2493905), (105, 1995124), (140, 1496343), (210, 997562), (420, 498781)]