21390480

素因数分解:

$2^4\times 3^4\times 5^1\times {\mathrm{3301}}^1$

素因数の和:3326

約数の個数: 100

約数和(自身を含む): 74314812

約数和(自身を除く): 52924332

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, 81, 90, 108, 120, 135, 144, 162, 180, 216, 240, 270, 324, 360, 405, 432, 540, 648, 720, 810, 1080, 1296, 1620, 2160, 3240, 3301, 6480, 6602, 9903, 13204, 16505, 19806, 26408, 29709, 33010, 39612, 49515, 52816, 59418, 66020, 79224, 89127, 99030, 118836, 132040, 148545, 158448, 178254, 198060, 237672, 264080, 267381, 297090, 356508, 396120, 445635, 475344, 534762, 594180, 713016, 792240, 891270, 1069524, 1188360, 1336905, 1426032, 1782540, 2139048, 2376720, 2673810, 3565080, 4278096, 5347620, 7130160, 10695240, 21390480]

約数ペア:

[(1, 21390480), (2, 10695240), (3, 7130160), (4, 5347620), (5, 4278096), (6, 3565080), (8, 2673810), (9, 2376720), (10, 2139048), (12, 1782540), (15, 1426032), (16, 1336905), (18, 1188360), (20, 1069524), (24, 891270), (27, 792240), (30, 713016), (36, 594180), (40, 534762), (45, 475344), (48, 445635), (54, 396120), (60, 356508), (72, 297090), (80, 267381), (81, 264080), (90, 237672), (108, 198060), (120, 178254), (135, 158448), (144, 148545), (162, 132040), (180, 118836), (216, 99030), (240, 89127), (270, 79224), (324, 66020), (360, 59418), (405, 52816), (432, 49515), (540, 39612), (648, 33010), (720, 29709), (810, 26408), (1080, 19806), (1296, 16505), (1620, 13204), (2160, 9903), (3240, 6602), (3301, 6480)]