18889780

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{97}}^1\times {\mathrm{107}}^1$

素因数の和:233

約数の個数: 96

約数和(自身を含む): 49787136

約数和(自身を除く): 30897356

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 35, 52, 65, 70, 91, 97, 107, 130, 140, 182, 194, 214, 260, 364, 388, 428, 455, 485, 535, 679, 749, 910, 970, 1070, 1261, 1358, 1391, 1498, 1820, 1940, 2140, 2522, 2716, 2782, 2996, 3395, 3745, 5044, 5564, 6305, 6790, 6955, 7490, 8827, 9737, 10379, 12610, 13580, 13910, 14980, 17654, 19474, 20758, 25220, 27820, 35308, 38948, 41516, 44135, 48685, 51895, 72653, 88270, 97370, 103790, 134927, 145306, 176540, 194740, 207580, 269854, 290612, 363265, 539708, 674635, 726530, 944489, 1349270, 1453060, 1888978, 2698540, 3777956, 4722445, 9444890, 18889780]

約数ペア:

[(1, 18889780), (2, 9444890), (4, 4722445), (5, 3777956), (7, 2698540), (10, 1888978), (13, 1453060), (14, 1349270), (20, 944489), (26, 726530), (28, 674635), (35, 539708), (52, 363265), (65, 290612), (70, 269854), (91, 207580), (97, 194740), (107, 176540), (130, 145306), (140, 134927), (182, 103790), (194, 97370), (214, 88270), (260, 72653), (364, 51895), (388, 48685), (428, 44135), (455, 41516), (485, 38948), (535, 35308), (679, 27820), (749, 25220), (910, 20758), (970, 19474), (1070, 17654), (1261, 14980), (1358, 13910), (1391, 13580), (1498, 12610), (1820, 10379), (1940, 9737), (2140, 8827), (2522, 7490), (2716, 6955), (2782, 6790), (2996, 6305), (3395, 5564), (3745, 5044)]