20815230

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{97}}^1\times {\mathrm{311}}^1$

素因数の和:441

約数の個数: 64

約数和(自身を含む): 52835328

約数和(自身を除く): 32020098

約数列:

[1, 2, 3, 5, 6, 10, 15, 23, 30, 46, 69, 97, 115, 138, 194, 230, 291, 311, 345, 485, 582, 622, 690, 933, 970, 1455, 1555, 1866, 2231, 2910, 3110, 4462, 4665, 6693, 7153, 9330, 11155, 13386, 14306, 21459, 22310, 30167, 33465, 35765, 42918, 60334, 66930, 71530, 90501, 107295, 150835, 181002, 214590, 301670, 452505, 693841, 905010, 1387682, 2081523, 3469205, 4163046, 6938410, 10407615, 20815230]

約数ペア:

[(1, 20815230), (2, 10407615), (3, 6938410), (5, 4163046), (6, 3469205), (10, 2081523), (15, 1387682), (23, 905010), (30, 693841), (46, 452505), (69, 301670), (97, 214590), (115, 181002), (138, 150835), (194, 107295), (230, 90501), (291, 71530), (311, 66930), (345, 60334), (485, 42918), (582, 35765), (622, 33465), (690, 30167), (933, 22310), (970, 21459), (1455, 14306), (1555, 13386), (1866, 11155), (2231, 9330), (2910, 7153), (3110, 6693), (4462, 4665)]