20690640

素因数分解:

$2^4\times 3^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{103}}^1$

素因数の和:159

約数の個数: 200

約数和(自身を含む): 74899968

約数和(自身を除く): 54209328

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 27, 30, 31, 36, 40, 45, 48, 54, 60, 62, 72, 80, 81, 90, 93, 103, 108, 120, 124, 135, 144, 155, 162, 180, 186, 206, 216, 240, 248, 270, 279, 309, 310, 324, 360, 372, 405, 412, 432, 465, 496, 515, 540, 558, 618, 620, 648, 720, 744, 810, 824, 837, 927, 930, 1030, 1080, 1116, 1236, 1240, 1296, 1395, 1488, 1545, 1620, 1648, 1674, 1854, 1860, 2060, 2160, 2232, 2472, 2480, 2511, 2781, 2790, 3090, 3193, 3240, 3348, 3708, 3720, 4120, 4185, 4464, 4635, 4944, 5022, 5562, 5580, 6180, 6386, 6480, 6696, 7416, 7440, 8240, 8343, 8370, 9270, 9579, 10044, 11124, 11160, 12360, 12555, 12772, 13392, 13905, 14832, 15965, 16686, 16740, 18540, 19158, 20088, 22248, 22320, 24720, 25110, 25544, 27810, 28737, 31930, 33372, 33480, 37080, 38316, 40176, 41715, 44496, 47895, 50220, 51088, 55620, 57474, 63860, 66744, 66960, 74160, 76632, 83430, 86211, 95790, 100440, 111240, 114948, 127720, 133488, 143685, 153264, 166860, 172422, 191580, 200880, 222480, 229896, 255440, 258633, 287370, 333720, 344844, 383160, 431055, 459792, 517266, 574740, 667440, 689688, 766320, 862110, 1034532, 1149480, 1293165, 1379376, 1724220, 2069064, 2298960, 2586330, 3448440, 4138128, 5172660, 6896880, 10345320, 20690640]

約数ペア:

[(1, 20690640), (2, 10345320), (3, 6896880), (4, 5172660), (5, 4138128), (6, 3448440), (8, 2586330), (9, 2298960), (10, 2069064), (12, 1724220), (15, 1379376), (16, 1293165), (18, 1149480), (20, 1034532), (24, 862110), (27, 766320), (30, 689688), (31, 667440), (36, 574740), (40, 517266), (45, 459792), (48, 431055), (54, 383160), (60, 344844), (62, 333720), (72, 287370), (80, 258633), (81, 255440), (90, 229896), (93, 222480), (103, 200880), (108, 191580), (120, 172422), (124, 166860), (135, 153264), (144, 143685), (155, 133488), (162, 127720), (180, 114948), (186, 111240), (206, 100440), (216, 95790), (240, 86211), (248, 83430), (270, 76632), (279, 74160), (309, 66960), (310, 66744), (324, 63860), (360, 57474), (372, 55620), (405, 51088), (412, 50220), (432, 47895), (465, 44496), (496, 41715), (515, 40176), (540, 38316), (558, 37080), (618, 33480), (620, 33372), (648, 31930), (720, 28737), (744, 27810), (810, 25544), (824, 25110), (837, 24720), (927, 22320), (930, 22248), (1030, 20088), (1080, 19158), (1116, 18540), (1236, 16740), (1240, 16686), (1296, 15965), (1395, 14832), (1488, 13905), (1545, 13392), (1620, 12772), (1648, 12555), (1674, 12360), (1854, 11160), (1860, 11124), (2060, 10044), (2160, 9579), (2232, 9270), (2472, 8370), (2480, 8343), (2511, 8240), (2781, 7440), (2790, 7416), (3090, 6696), (3193, 6480), (3240, 6386), (3348, 6180), (3708, 5580), (3720, 5562), (4120, 5022), (4185, 4944), (4464, 4635)]