21077820

素因数分解:

$2^2\times 3^5\times 5^1\times {\mathrm{4337}}^1$

素因数の和:4361

約数の個数: 72

約数和(自身を含む): 66319344

約数和(自身を除く): 45241524

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 36, 45, 54, 60, 81, 90, 108, 135, 162, 180, 243, 270, 324, 405, 486, 540, 810, 972, 1215, 1620, 2430, 4337, 4860, 8674, 13011, 17348, 21685, 26022, 39033, 43370, 52044, 65055, 78066, 86740, 117099, 130110, 156132, 195165, 234198, 260220, 351297, 390330, 468396, 585495, 702594, 780660, 1053891, 1170990, 1405188, 1756485, 2107782, 2341980, 3512970, 4215564, 5269455, 7025940, 10538910, 21077820]

約数ペア:

[(1, 21077820), (2, 10538910), (3, 7025940), (4, 5269455), (5, 4215564), (6, 3512970), (9, 2341980), (10, 2107782), (12, 1756485), (15, 1405188), (18, 1170990), (20, 1053891), (27, 780660), (30, 702594), (36, 585495), (45, 468396), (54, 390330), (60, 351297), (81, 260220), (90, 234198), (108, 195165), (135, 156132), (162, 130110), (180, 117099), (243, 86740), (270, 78066), (324, 65055), (405, 52044), (486, 43370), (540, 39033), (810, 26022), (972, 21685), (1215, 17348), (1620, 13011), (2430, 8674), (4337, 4860)]