21240576

素因数分解:

$2^8\times 3^3\times 7^1\times {\mathrm{439}}^1$

素因数の和:471

約数の個数: 144

約数和(自身を含む): 71948800

約数和(自身を除く): 50708224

約数列:

[1, 2, 3, 4, 6, 7, 8, 9, 12, 14, 16, 18, 21, 24, 27, 28, 32, 36, 42, 48, 54, 56, 63, 64, 72, 84, 96, 108, 112, 126, 128, 144, 168, 189, 192, 216, 224, 252, 256, 288, 336, 378, 384, 432, 439, 448, 504, 576, 672, 756, 768, 864, 878, 896, 1008, 1152, 1317, 1344, 1512, 1728, 1756, 1792, 2016, 2304, 2634, 2688, 3024, 3073, 3456, 3512, 3951, 4032, 5268, 5376, 6048, 6146, 6912, 7024, 7902, 8064, 9219, 10536, 11853, 12096, 12292, 14048, 15804, 16128, 18438, 21072, 23706, 24192, 24584, 27657, 28096, 31608, 36876, 42144, 47412, 48384, 49168, 55314, 56192, 63216, 73752, 82971, 84288, 94824, 98336, 110628, 112384, 126432, 147504, 165942, 168576, 189648, 196672, 221256, 252864, 295008, 331884, 337152, 379296, 393344, 442512, 505728, 590016, 663768, 758592, 786688, 885024, 1011456, 1180032, 1327536, 1517184, 1770048, 2360064, 2655072, 3034368, 3540096, 5310144, 7080192, 10620288, 21240576]

約数ペア:

[(1, 21240576), (2, 10620288), (3, 7080192), (4, 5310144), (6, 3540096), (7, 3034368), (8, 2655072), (9, 2360064), (12, 1770048), (14, 1517184), (16, 1327536), (18, 1180032), (21, 1011456), (24, 885024), (27, 786688), (28, 758592), (32, 663768), (36, 590016), (42, 505728), (48, 442512), (54, 393344), (56, 379296), (63, 337152), (64, 331884), (72, 295008), (84, 252864), (96, 221256), (108, 196672), (112, 189648), (126, 168576), (128, 165942), (144, 147504), (168, 126432), (189, 112384), (192, 110628), (216, 98336), (224, 94824), (252, 84288), (256, 82971), (288, 73752), (336, 63216), (378, 56192), (384, 55314), (432, 49168), (439, 48384), (448, 47412), (504, 42144), (576, 36876), (672, 31608), (756, 28096), (768, 27657), (864, 24584), (878, 24192), (896, 23706), (1008, 21072), (1152, 18438), (1317, 16128), (1344, 15804), (1512, 14048), (1728, 12292), (1756, 12096), (1792, 11853), (2016, 10536), (2304, 9219), (2634, 8064), (2688, 7902), (3024, 7024), (3073, 6912), (3456, 6146), (3512, 6048), (3951, 5376), (4032, 5268)]