21448400

素因数分解:

$2^4\times 5^2\times {\mathrm{29}}^1\times {\mathrm{43}}^2$

素因数の和:133

約数の個数: 90

約数和(自身を含む): 54575190

約数和(自身を除く): 33126790

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 29, 40, 43, 50, 58, 80, 86, 100, 116, 145, 172, 200, 215, 232, 290, 344, 400, 430, 464, 580, 688, 725, 860, 1075, 1160, 1247, 1450, 1720, 1849, 2150, 2320, 2494, 2900, 3440, 3698, 4300, 4988, 5800, 6235, 7396, 8600, 9245, 9976, 11600, 12470, 14792, 17200, 18490, 19952, 24940, 29584, 31175, 36980, 46225, 49880, 53621, 62350, 73960, 92450, 99760, 107242, 124700, 147920, 184900, 214484, 249400, 268105, 369800, 428968, 498800, 536210, 739600, 857936, 1072420, 1340525, 2144840, 2681050, 4289680, 5362100, 10724200, 21448400]

約数ペア:

[(1, 21448400), (2, 10724200), (4, 5362100), (5, 4289680), (8, 2681050), (10, 2144840), (16, 1340525), (20, 1072420), (25, 857936), (29, 739600), (40, 536210), (43, 498800), (50, 428968), (58, 369800), (80, 268105), (86, 249400), (100, 214484), (116, 184900), (145, 147920), (172, 124700), (200, 107242), (215, 99760), (232, 92450), (290, 73960), (344, 62350), (400, 53621), (430, 49880), (464, 46225), (580, 36980), (688, 31175), (725, 29584), (860, 24940), (1075, 19952), (1160, 18490), (1247, 17200), (1450, 14792), (1720, 12470), (1849, 11600), (2150, 9976), (2320, 9245), (2494, 8600), (2900, 7396), (3440, 6235), (3698, 5800), (4300, 4988)]