21323520

素因数分解:

$2^8\times 3^3\times 5^1\times {\mathrm{617}}^1$

素因数の和:647

約数の個数: 144

約数和(自身を含む): 75791520

約数和(自身を除く): 54468000

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 27, 30, 32, 36, 40, 45, 48, 54, 60, 64, 72, 80, 90, 96, 108, 120, 128, 135, 144, 160, 180, 192, 216, 240, 256, 270, 288, 320, 360, 384, 432, 480, 540, 576, 617, 640, 720, 768, 864, 960, 1080, 1152, 1234, 1280, 1440, 1728, 1851, 1920, 2160, 2304, 2468, 2880, 3085, 3456, 3702, 3840, 4320, 4936, 5553, 5760, 6170, 6912, 7404, 8640, 9255, 9872, 11106, 11520, 12340, 14808, 16659, 17280, 18510, 19744, 22212, 24680, 27765, 29616, 33318, 34560, 37020, 39488, 44424, 49360, 55530, 59232, 66636, 74040, 78976, 83295, 88848, 98720, 111060, 118464, 133272, 148080, 157952, 166590, 177696, 197440, 222120, 236928, 266544, 296160, 333180, 355392, 394880, 444240, 473856, 533088, 592320, 666360, 710784, 789760, 888480, 1066176, 1184640, 1332720, 1421568, 1776960, 2132352, 2369280, 2665440, 3553920, 4264704, 5330880, 7107840, 10661760, 21323520]

約数ペア:

[(1, 21323520), (2, 10661760), (3, 7107840), (4, 5330880), (5, 4264704), (6, 3553920), (8, 2665440), (9, 2369280), (10, 2132352), (12, 1776960), (15, 1421568), (16, 1332720), (18, 1184640), (20, 1066176), (24, 888480), (27, 789760), (30, 710784), (32, 666360), (36, 592320), (40, 533088), (45, 473856), (48, 444240), (54, 394880), (60, 355392), (64, 333180), (72, 296160), (80, 266544), (90, 236928), (96, 222120), (108, 197440), (120, 177696), (128, 166590), (135, 157952), (144, 148080), (160, 133272), (180, 118464), (192, 111060), (216, 98720), (240, 88848), (256, 83295), (270, 78976), (288, 74040), (320, 66636), (360, 59232), (384, 55530), (432, 49360), (480, 44424), (540, 39488), (576, 37020), (617, 34560), (640, 33318), (720, 29616), (768, 27765), (864, 24680), (960, 22212), (1080, 19744), (1152, 18510), (1234, 17280), (1280, 16659), (1440, 14808), (1728, 12340), (1851, 11520), (1920, 11106), (2160, 9872), (2304, 9255), (2468, 8640), (2880, 7404), (3085, 6912), (3456, 6170), (3702, 5760), (3840, 5553), (4320, 4936)]