20954160

素因数分解:

$2^4\times 3^3\times 5^1\times {\mathrm{89}}^1\times {\mathrm{109}}^1$

素因数の和:220

約数の個数: 160

約数和(自身を含む): 73656000

約数和(自身を除く): 52701840

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 27, 30, 36, 40, 45, 48, 54, 60, 72, 80, 89, 90, 108, 109, 120, 135, 144, 178, 180, 216, 218, 240, 267, 270, 327, 356, 360, 432, 436, 445, 534, 540, 545, 654, 712, 720, 801, 872, 890, 981, 1068, 1080, 1090, 1308, 1335, 1424, 1602, 1635, 1744, 1780, 1962, 2136, 2160, 2180, 2403, 2616, 2670, 2943, 3204, 3270, 3560, 3924, 4005, 4272, 4360, 4806, 4905, 5232, 5340, 5886, 6408, 6540, 7120, 7848, 8010, 8720, 9612, 9701, 9810, 10680, 11772, 12015, 12816, 13080, 14715, 15696, 16020, 19224, 19402, 19620, 21360, 23544, 24030, 26160, 29103, 29430, 32040, 38448, 38804, 39240, 47088, 48060, 48505, 58206, 58860, 64080, 77608, 78480, 87309, 96120, 97010, 116412, 117720, 145515, 155216, 174618, 192240, 194020, 232824, 235440, 261927, 291030, 349236, 388040, 436545, 465648, 523854, 582060, 698472, 776080, 873090, 1047708, 1164120, 1309635, 1396944, 1746180, 2095416, 2328240, 2619270, 3492360, 4190832, 5238540, 6984720, 10477080, 20954160]

約数ペア:

[(1, 20954160), (2, 10477080), (3, 6984720), (4, 5238540), (5, 4190832), (6, 3492360), (8, 2619270), (9, 2328240), (10, 2095416), (12, 1746180), (15, 1396944), (16, 1309635), (18, 1164120), (20, 1047708), (24, 873090), (27, 776080), (30, 698472), (36, 582060), (40, 523854), (45, 465648), (48, 436545), (54, 388040), (60, 349236), (72, 291030), (80, 261927), (89, 235440), (90, 232824), (108, 194020), (109, 192240), (120, 174618), (135, 155216), (144, 145515), (178, 117720), (180, 116412), (216, 97010), (218, 96120), (240, 87309), (267, 78480), (270, 77608), (327, 64080), (356, 58860), (360, 58206), (432, 48505), (436, 48060), (445, 47088), (534, 39240), (540, 38804), (545, 38448), (654, 32040), (712, 29430), (720, 29103), (801, 26160), (872, 24030), (890, 23544), (981, 21360), (1068, 19620), (1080, 19402), (1090, 19224), (1308, 16020), (1335, 15696), (1424, 14715), (1602, 13080), (1635, 12816), (1744, 12015), (1780, 11772), (1962, 10680), (2136, 9810), (2160, 9701), (2180, 9612), (2403, 8720), (2616, 8010), (2670, 7848), (2943, 7120), (3204, 6540), (3270, 6408), (3560, 5886), (3924, 5340), (4005, 5232), (4272, 4905), (4360, 4806)]