21042720

素因数分解:

$2^5\times 3^3\times 5^1\times {\mathrm{4871}}^1$

素因数の和:4895

約数の個数: 96

約数和(自身を含む): 73664640

約数和(自身を除く): 52621920

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, 72, 80, 90, 96, 108, 120, 135, 144, 160, 180, 216, 240, 270, 288, 360, 432, 480, 540, 720, 864, 1080, 1440, 2160, 4320, 4871, 9742, 14613, 19484, 24355, 29226, 38968, 43839, 48710, 58452, 73065, 77936, 87678, 97420, 116904, 131517, 146130, 155872, 175356, 194840, 219195, 233808, 263034, 292260, 350712, 389680, 438390, 467616, 526068, 584520, 657585, 701424, 779360, 876780, 1052136, 1169040, 1315170, 1402848, 1753560, 2104272, 2338080, 2630340, 3507120, 4208544, 5260680, 7014240, 10521360, 21042720]

約数ペア:

[(1, 21042720), (2, 10521360), (3, 7014240), (4, 5260680), (5, 4208544), (6, 3507120), (8, 2630340), (9, 2338080), (10, 2104272), (12, 1753560), (15, 1402848), (16, 1315170), (18, 1169040), (20, 1052136), (24, 876780), (27, 779360), (30, 701424), (32, 657585), (36, 584520), (40, 526068), (45, 467616), (48, 438390), (54, 389680), (60, 350712), (72, 292260), (80, 263034), (90, 233808), (96, 219195), (108, 194840), (120, 175356), (135, 155872), (144, 146130), (160, 131517), (180, 116904), (216, 97420), (240, 87678), (270, 77936), (288, 73065), (360, 58452), (432, 48710), (480, 43839), (540, 38968), (720, 29226), (864, 24355), (1080, 19484), (1440, 14613), (2160, 9742), (4320, 4871)]