28701540

素因数分解:

$2^2\times 3^4\times 5^1\times 7^1\times {\mathrm{2531}}^1$

素因数の和:2559

約数の個数: 120

約数和(自身を含む): 102940992

約数和(自身を除く): 74239452

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 27, 28, 30, 35, 36, 42, 45, 54, 60, 63, 70, 81, 84, 90, 105, 108, 126, 135, 140, 162, 180, 189, 210, 252, 270, 315, 324, 378, 405, 420, 540, 567, 630, 756, 810, 945, 1134, 1260, 1620, 1890, 2268, 2531, 2835, 3780, 5062, 5670, 7593, 10124, 11340, 12655, 15186, 17717, 22779, 25310, 30372, 35434, 37965, 45558, 50620, 53151, 68337, 70868, 75930, 88585, 91116, 106302, 113895, 136674, 151860, 159453, 177170, 205011, 212604, 227790, 265755, 273348, 318906, 341685, 354340, 410022, 455580, 478359, 531510, 637812, 683370, 797265, 820044, 956718, 1025055, 1063020, 1366740, 1435077, 1594530, 1913436, 2050110, 2391795, 2870154, 3189060, 4100220, 4783590, 5740308, 7175385, 9567180, 14350770, 28701540]

約数ペア:

[(1, 28701540), (2, 14350770), (3, 9567180), (4, 7175385), (5, 5740308), (6, 4783590), (7, 4100220), (9, 3189060), (10, 2870154), (12, 2391795), (14, 2050110), (15, 1913436), (18, 1594530), (20, 1435077), (21, 1366740), (27, 1063020), (28, 1025055), (30, 956718), (35, 820044), (36, 797265), (42, 683370), (45, 637812), (54, 531510), (60, 478359), (63, 455580), (70, 410022), (81, 354340), (84, 341685), (90, 318906), (105, 273348), (108, 265755), (126, 227790), (135, 212604), (140, 205011), (162, 177170), (180, 159453), (189, 151860), (210, 136674), (252, 113895), (270, 106302), (315, 91116), (324, 88585), (378, 75930), (405, 70868), (420, 68337), (540, 53151), (567, 50620), (630, 45558), (756, 37965), (810, 35434), (945, 30372), (1134, 25310), (1260, 22779), (1620, 17717), (1890, 15186), (2268, 12655), (2531, 11340), (2835, 10124), (3780, 7593), (5062, 5670)]