20761680

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{157}}^1$

素因数の和:221

約数の個数: 160

約数和(自身を含む): 70531200

約数和(自身を除く): 49769520

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 19, 20, 24, 29, 30, 38, 40, 48, 57, 58, 60, 76, 80, 87, 95, 114, 116, 120, 145, 152, 157, 174, 190, 228, 232, 240, 285, 290, 304, 314, 348, 380, 435, 456, 464, 471, 551, 570, 580, 628, 696, 760, 785, 870, 912, 942, 1102, 1140, 1160, 1256, 1392, 1520, 1570, 1653, 1740, 1884, 2204, 2280, 2320, 2355, 2512, 2755, 2983, 3140, 3306, 3480, 3768, 4408, 4553, 4560, 4710, 5510, 5966, 6280, 6612, 6960, 7536, 8265, 8816, 8949, 9106, 9420, 11020, 11932, 12560, 13224, 13659, 14915, 16530, 17898, 18212, 18840, 22040, 22765, 23864, 26448, 27318, 29830, 33060, 35796, 36424, 37680, 44080, 44745, 45530, 47728, 54636, 59660, 66120, 68295, 71592, 72848, 86507, 89490, 91060, 109272, 119320, 132240, 136590, 143184, 173014, 178980, 182120, 218544, 238640, 259521, 273180, 346028, 357960, 364240, 432535, 519042, 546360, 692056, 715920, 865070, 1038084, 1092720, 1297605, 1384112, 1730140, 2076168, 2595210, 3460280, 4152336, 5190420, 6920560, 10380840, 20761680]

約数ペア:

[(1, 20761680), (2, 10380840), (3, 6920560), (4, 5190420), (5, 4152336), (6, 3460280), (8, 2595210), (10, 2076168), (12, 1730140), (15, 1384112), (16, 1297605), (19, 1092720), (20, 1038084), (24, 865070), (29, 715920), (30, 692056), (38, 546360), (40, 519042), (48, 432535), (57, 364240), (58, 357960), (60, 346028), (76, 273180), (80, 259521), (87, 238640), (95, 218544), (114, 182120), (116, 178980), (120, 173014), (145, 143184), (152, 136590), (157, 132240), (174, 119320), (190, 109272), (228, 91060), (232, 89490), (240, 86507), (285, 72848), (290, 71592), (304, 68295), (314, 66120), (348, 59660), (380, 54636), (435, 47728), (456, 45530), (464, 44745), (471, 44080), (551, 37680), (570, 36424), (580, 35796), (628, 33060), (696, 29830), (760, 27318), (785, 26448), (870, 23864), (912, 22765), (942, 22040), (1102, 18840), (1140, 18212), (1160, 17898), (1256, 16530), (1392, 14915), (1520, 13659), (1570, 13224), (1653, 12560), (1740, 11932), (1884, 11020), (2204, 9420), (2280, 9106), (2320, 8949), (2355, 8816), (2512, 8265), (2755, 7536), (2983, 6960), (3140, 6612), (3306, 6280), (3480, 5966), (3768, 5510), (4408, 4710), (4553, 4560)]