20357280

素因数分解:

$2^5\times 3^2\times 5^1\times {\mathrm{67}}^1\times {\mathrm{211}}^1$

素因数の和:299

約数の個数: 144

約数和(自身を含む): 70840224

約数和(自身を除く): 50482944

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 32, 36, 40, 45, 48, 60, 67, 72, 80, 90, 96, 120, 134, 144, 160, 180, 201, 211, 240, 268, 288, 335, 360, 402, 422, 480, 536, 603, 633, 670, 720, 804, 844, 1005, 1055, 1072, 1206, 1266, 1340, 1440, 1608, 1688, 1899, 2010, 2110, 2144, 2412, 2532, 2680, 3015, 3165, 3216, 3376, 3798, 4020, 4220, 4824, 5064, 5360, 6030, 6330, 6432, 6752, 7596, 8040, 8440, 9495, 9648, 10128, 10720, 12060, 12660, 14137, 15192, 16080, 16880, 18990, 19296, 20256, 24120, 25320, 28274, 30384, 32160, 33760, 37980, 42411, 48240, 50640, 56548, 60768, 70685, 75960, 84822, 96480, 101280, 113096, 127233, 141370, 151920, 169644, 212055, 226192, 254466, 282740, 303840, 339288, 424110, 452384, 508932, 565480, 636165, 678576, 848220, 1017864, 1130960, 1272330, 1357152, 1696440, 2035728, 2261920, 2544660, 3392880, 4071456, 5089320, 6785760, 10178640, 20357280]

約数ペア:

[(1, 20357280), (2, 10178640), (3, 6785760), (4, 5089320), (5, 4071456), (6, 3392880), (8, 2544660), (9, 2261920), (10, 2035728), (12, 1696440), (15, 1357152), (16, 1272330), (18, 1130960), (20, 1017864), (24, 848220), (30, 678576), (32, 636165), (36, 565480), (40, 508932), (45, 452384), (48, 424110), (60, 339288), (67, 303840), (72, 282740), (80, 254466), (90, 226192), (96, 212055), (120, 169644), (134, 151920), (144, 141370), (160, 127233), (180, 113096), (201, 101280), (211, 96480), (240, 84822), (268, 75960), (288, 70685), (335, 60768), (360, 56548), (402, 50640), (422, 48240), (480, 42411), (536, 37980), (603, 33760), (633, 32160), (670, 30384), (720, 28274), (804, 25320), (844, 24120), (1005, 20256), (1055, 19296), (1072, 18990), (1206, 16880), (1266, 16080), (1340, 15192), (1440, 14137), (1608, 12660), (1688, 12060), (1899, 10720), (2010, 10128), (2110, 9648), (2144, 9495), (2412, 8440), (2532, 8040), (2680, 7596), (3015, 6752), (3165, 6432), (3216, 6330), (3376, 6030), (3798, 5360), (4020, 5064), (4220, 4824)]