204400240

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{359}}^1\times {\mathrm{647}}^1$

素因数の和:1030

約数の個数: 80

約数和(自身を含む): 520680960

約数和(自身を除く): 316280720

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 176, 220, 359, 440, 647, 718, 880, 1294, 1436, 1795, 2588, 2872, 3235, 3590, 3949, 5176, 5744, 6470, 7117, 7180, 7898, 10352, 12940, 14234, 14360, 15796, 19745, 25880, 28468, 28720, 31592, 35585, 39490, 51760, 56936, 63184, 71170, 78980, 113872, 142340, 157960, 232273, 284680, 315920, 464546, 569360, 929092, 1161365, 1858184, 2322730, 2555003, 3716368, 4645460, 5110006, 9290920, 10220012, 12775015, 18581840, 20440024, 25550030, 40880048, 51100060, 102200120, 204400240]

約数ペア:

[(1, 204400240), (2, 102200120), (4, 51100060), (5, 40880048), (8, 25550030), (10, 20440024), (11, 18581840), (16, 12775015), (20, 10220012), (22, 9290920), (40, 5110006), (44, 4645460), (55, 3716368), (80, 2555003), (88, 2322730), (110, 1858184), (176, 1161365), (220, 929092), (359, 569360), (440, 464546), (647, 315920), (718, 284680), (880, 232273), (1294, 157960), (1436, 142340), (1795, 113872), (2588, 78980), (2872, 71170), (3235, 63184), (3590, 56936), (3949, 51760), (5176, 39490), (5744, 35585), (6470, 31592), (7117, 28720), (7180, 28468), (7898, 25880), (10352, 19745), (12940, 15796), (14234, 14360)]