81904480

素因数分解:

$2^5\times 5^1\times 7^2\times {\mathrm{31}}^1\times {\mathrm{337}}^1$

素因数の和:397

約数の個数: 144

約数和(自身を含む): 233041536

約数和(自身を除く): 151137056

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 31, 32, 35, 40, 49, 56, 62, 70, 80, 98, 112, 124, 140, 155, 160, 196, 217, 224, 245, 248, 280, 310, 337, 392, 434, 490, 496, 560, 620, 674, 784, 868, 980, 992, 1085, 1120, 1240, 1348, 1519, 1568, 1685, 1736, 1960, 2170, 2359, 2480, 2696, 3038, 3370, 3472, 3920, 4340, 4718, 4960, 5392, 6076, 6740, 6944, 7595, 7840, 8680, 9436, 10447, 10784, 11795, 12152, 13480, 15190, 16513, 17360, 18872, 20894, 23590, 24304, 26960, 30380, 33026, 34720, 37744, 41788, 47180, 48608, 52235, 53920, 60760, 66052, 73129, 75488, 82565, 83576, 94360, 104470, 121520, 132104, 146258, 165130, 167152, 188720, 208940, 243040, 264208, 292516, 330260, 334304, 365645, 377440, 417880, 511903, 528416, 585032, 660520, 731290, 835760, 1023806, 1170064, 1321040, 1462580, 1671520, 2047612, 2340128, 2559515, 2642080, 2925160, 4095224, 5119030, 5850320, 8190448, 10238060, 11700640, 16380896, 20476120, 40952240, 81904480]

約数ペア:

[(1, 81904480), (2, 40952240), (4, 20476120), (5, 16380896), (7, 11700640), (8, 10238060), (10, 8190448), (14, 5850320), (16, 5119030), (20, 4095224), (28, 2925160), (31, 2642080), (32, 2559515), (35, 2340128), (40, 2047612), (49, 1671520), (56, 1462580), (62, 1321040), (70, 1170064), (80, 1023806), (98, 835760), (112, 731290), (124, 660520), (140, 585032), (155, 528416), (160, 511903), (196, 417880), (217, 377440), (224, 365645), (245, 334304), (248, 330260), (280, 292516), (310, 264208), (337, 243040), (392, 208940), (434, 188720), (490, 167152), (496, 165130), (560, 146258), (620, 132104), (674, 121520), (784, 104470), (868, 94360), (980, 83576), (992, 82565), (1085, 75488), (1120, 73129), (1240, 66052), (1348, 60760), (1519, 53920), (1568, 52235), (1685, 48608), (1736, 47180), (1960, 41788), (2170, 37744), (2359, 34720), (2480, 33026), (2696, 30380), (3038, 26960), (3370, 24304), (3472, 23590), (3920, 20894), (4340, 18872), (4718, 17360), (4960, 16513), (5392, 15190), (6076, 13480), (6740, 12152), (6944, 11795), (7595, 10784), (7840, 10447), (8680, 9436)]