21357686

素因数分解:

$2^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{89}}^1\times {\mathrm{281}}^1$

素因数の和:440

約数の個数: 32

約数和(自身を含む): 37765440

約数和(自身を除く): 16407754

約数列:

[1, 2, 7, 14, 61, 89, 122, 178, 281, 427, 562, 623, 854, 1246, 1967, 3934, 5429, 10858, 17141, 25009, 34282, 38003, 50018, 76006, 119987, 175063, 239974, 350126, 1525549, 3051098, 10678843, 21357686]

約数ペア:

[(1, 21357686), (2, 10678843), (7, 3051098), (14, 1525549), (61, 350126), (89, 239974), (122, 175063), (178, 119987), (281, 76006), (427, 50018), (562, 38003), (623, 34282), (854, 25009), (1246, 17141), (1967, 10858), (3934, 5429)]