28920780

素因数分解:

$2^2\times 3^3\times 5^1\times 7^2\times {\mathrm{1093}}^1$

素因数の和:1125

約数の個数: 144

約数和(自身を含む): 104761440

約数和(自身を除く): 75840660

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, 49, 54, 60, 63, 70, 84, 90, 98, 105, 108, 126, 135, 140, 147, 180, 189, 196, 210, 245, 252, 270, 294, 315, 378, 420, 441, 490, 540, 588, 630, 735, 756, 882, 945, 980, 1093, 1260, 1323, 1470, 1764, 1890, 2186, 2205, 2646, 2940, 3279, 3780, 4372, 4410, 5292, 5465, 6558, 6615, 7651, 8820, 9837, 10930, 13116, 13230, 15302, 16395, 19674, 21860, 22953, 26460, 29511, 30604, 32790, 38255, 39348, 45906, 49185, 53557, 59022, 65580, 68859, 76510, 91812, 98370, 107114, 114765, 118044, 137718, 147555, 153020, 160671, 196740, 206577, 214228, 229530, 267785, 275436, 295110, 321342, 344295, 413154, 459060, 482013, 535570, 590220, 642684, 688590, 803355, 826308, 964026, 1032885, 1071140, 1377180, 1446039, 1606710, 1928052, 2065770, 2410065, 2892078, 3213420, 4131540, 4820130, 5784156, 7230195, 9640260, 14460390, 28920780]

約数ペア:

[(1, 28920780), (2, 14460390), (3, 9640260), (4, 7230195), (5, 5784156), (6, 4820130), (7, 4131540), (9, 3213420), (10, 2892078), (12, 2410065), (14, 2065770), (15, 1928052), (18, 1606710), (20, 1446039), (21, 1377180), (27, 1071140), (28, 1032885), (30, 964026), (35, 826308), (36, 803355), (42, 688590), (45, 642684), (49, 590220), (54, 535570), (60, 482013), (63, 459060), (70, 413154), (84, 344295), (90, 321342), (98, 295110), (105, 275436), (108, 267785), (126, 229530), (135, 214228), (140, 206577), (147, 196740), (180, 160671), (189, 153020), (196, 147555), (210, 137718), (245, 118044), (252, 114765), (270, 107114), (294, 98370), (315, 91812), (378, 76510), (420, 68859), (441, 65580), (490, 59022), (540, 53557), (588, 49185), (630, 45906), (735, 39348), (756, 38255), (882, 32790), (945, 30604), (980, 29511), (1093, 26460), (1260, 22953), (1323, 21860), (1470, 19674), (1764, 16395), (1890, 15302), (2186, 13230), (2205, 13116), (2646, 10930), (2940, 9837), (3279, 8820), (3780, 7651), (4372, 6615), (4410, 6558), (5292, 5465)]