21756960

素因数分解:

$2^5\times 3^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{521}}^1$

素因数の和:571

約数の個数: 144

約数和(自身を含む): 76953240

約数和(自身を除く): 55196280

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 29, 30, 32, 36, 40, 45, 48, 58, 60, 72, 80, 87, 90, 96, 116, 120, 144, 145, 160, 174, 180, 232, 240, 261, 288, 290, 348, 360, 435, 464, 480, 521, 522, 580, 696, 720, 870, 928, 1042, 1044, 1160, 1305, 1392, 1440, 1563, 1740, 2084, 2088, 2320, 2605, 2610, 2784, 3126, 3480, 4168, 4176, 4640, 4689, 5210, 5220, 6252, 6960, 7815, 8336, 8352, 9378, 10420, 10440, 12504, 13920, 15109, 15630, 16672, 18756, 20840, 20880, 23445, 25008, 30218, 31260, 37512, 41680, 41760, 45327, 46890, 50016, 60436, 62520, 75024, 75545, 83360, 90654, 93780, 120872, 125040, 135981, 150048, 151090, 181308, 187560, 226635, 241744, 250080, 271962, 302180, 362616, 375120, 453270, 483488, 543924, 604360, 679905, 725232, 750240, 906540, 1087848, 1208720, 1359810, 1450464, 1813080, 2175696, 2417440, 2719620, 3626160, 4351392, 5439240, 7252320, 10878480, 21756960]

約数ペア:

[(1, 21756960), (2, 10878480), (3, 7252320), (4, 5439240), (5, 4351392), (6, 3626160), (8, 2719620), (9, 2417440), (10, 2175696), (12, 1813080), (15, 1450464), (16, 1359810), (18, 1208720), (20, 1087848), (24, 906540), (29, 750240), (30, 725232), (32, 679905), (36, 604360), (40, 543924), (45, 483488), (48, 453270), (58, 375120), (60, 362616), (72, 302180), (80, 271962), (87, 250080), (90, 241744), (96, 226635), (116, 187560), (120, 181308), (144, 151090), (145, 150048), (160, 135981), (174, 125040), (180, 120872), (232, 93780), (240, 90654), (261, 83360), (288, 75545), (290, 75024), (348, 62520), (360, 60436), (435, 50016), (464, 46890), (480, 45327), (521, 41760), (522, 41680), (580, 37512), (696, 31260), (720, 30218), (870, 25008), (928, 23445), (1042, 20880), (1044, 20840), (1160, 18756), (1305, 16672), (1392, 15630), (1440, 15109), (1563, 13920), (1740, 12504), (2084, 10440), (2088, 10420), (2320, 9378), (2605, 8352), (2610, 8336), (2784, 7815), (3126, 6960), (3480, 6252), (4168, 5220), (4176, 5210), (4640, 4689)]