21656160

素因数分解:

$2^5\times 3^5\times 5^1\times {\mathrm{557}}^1$

素因数の和:587

約数の個数: 144

約数和(自身を含む): 76776336

約数和(自身を除く): 55120176

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, 81, 90, 96, 108, 120, 135, 144, 160, 162, 180, 216, 240, 243, 270, 288, 324, 360, 405, 432, 480, 486, 540, 557, 648, 720, 810, 864, 972, 1080, 1114, 1215, 1296, 1440, 1620, 1671, 1944, 2160, 2228, 2430, 2592, 2785, 3240, 3342, 3888, 4320, 4456, 4860, 5013, 5570, 6480, 6684, 7776, 8355, 8912, 9720, 10026, 11140, 12960, 13368, 15039, 16710, 17824, 19440, 20052, 22280, 25065, 26736, 30078, 33420, 38880, 40104, 44560, 45117, 50130, 53472, 60156, 66840, 75195, 80208, 89120, 90234, 100260, 120312, 133680, 135351, 150390, 160416, 180468, 200520, 225585, 240624, 267360, 270702, 300780, 360936, 401040, 451170, 481248, 541404, 601560, 676755, 721872, 802080, 902340, 1082808, 1203120, 1353510, 1443744, 1804680, 2165616, 2406240, 2707020, 3609360, 4331232, 5414040, 7218720, 10828080, 21656160]

約数ペア:

[(1, 21656160), (2, 10828080), (3, 7218720), (4, 5414040), (5, 4331232), (6, 3609360), (8, 2707020), (9, 2406240), (10, 2165616), (12, 1804680), (15, 1443744), (16, 1353510), (18, 1203120), (20, 1082808), (24, 902340), (27, 802080), (30, 721872), (32, 676755), (36, 601560), (40, 541404), (45, 481248), (48, 451170), (54, 401040), (60, 360936), (72, 300780), (80, 270702), (81, 267360), (90, 240624), (96, 225585), (108, 200520), (120, 180468), (135, 160416), (144, 150390), (160, 135351), (162, 133680), (180, 120312), (216, 100260), (240, 90234), (243, 89120), (270, 80208), (288, 75195), (324, 66840), (360, 60156), (405, 53472), (432, 50130), (480, 45117), (486, 44560), (540, 40104), (557, 38880), (648, 33420), (720, 30078), (810, 26736), (864, 25065), (972, 22280), (1080, 20052), (1114, 19440), (1215, 17824), (1296, 16710), (1440, 15039), (1620, 13368), (1671, 12960), (1944, 11140), (2160, 10026), (2228, 9720), (2430, 8912), (2592, 8355), (2785, 7776), (3240, 6684), (3342, 6480), (3888, 5570), (4320, 5013), (4456, 4860)]