7831270020

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{18645881}}^1$

素因数の和:18645900

約数の個数: 48

約数和(自身を含む): 25060065408

約数和(自身を除く): 17228795388

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, 18645881, 37291762, 55937643, 74583524, 93229405, 111875286, 130521167, 186458810, 223750572, 261042334, 279688215, 372917620, 391563501, 522084668, 559376430, 652605835, 783127002, 1118752860, 1305211670, 1566254004, 1957817505, 2610423340, 3915635010, 7831270020]

約数ペア:

[(1, 7831270020), (2, 3915635010), (3, 2610423340), (4, 1957817505), (5, 1566254004), (6, 1305211670), (7, 1118752860), (10, 783127002), (12, 652605835), (14, 559376430), (15, 522084668), (20, 391563501), (21, 372917620), (28, 279688215), (30, 261042334), (35, 223750572), (42, 186458810), (60, 130521167), (70, 111875286), (84, 93229405), (105, 74583524), (140, 55937643), (210, 37291762), (420, 18645881)]