261040640

素因数分解:

$2^9\times 5^1\times 7^2\times {\mathrm{2081}}^1$

素因数の和:2118

約数の個数: 120

約数和(自身を含む): 728421012

約数和(自身を除く): 467380372

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 49, 56, 64, 70, 80, 98, 112, 128, 140, 160, 196, 224, 245, 256, 280, 320, 392, 448, 490, 512, 560, 640, 784, 896, 980, 1120, 1280, 1568, 1792, 1960, 2081, 2240, 2560, 3136, 3584, 3920, 4162, 4480, 6272, 7840, 8324, 8960, 10405, 12544, 14567, 15680, 16648, 17920, 20810, 25088, 29134, 31360, 33296, 41620, 58268, 62720, 66592, 72835, 83240, 101969, 116536, 125440, 133184, 145670, 166480, 203938, 233072, 266368, 291340, 332960, 407876, 466144, 509845, 532736, 582680, 665920, 815752, 932288, 1019690, 1065472, 1165360, 1331840, 1631504, 1864576, 2039380, 2330720, 2663680, 3263008, 3729152, 4078760, 4661440, 5327360, 6526016, 7458304, 8157520, 9322880, 13052032, 16315040, 18645760, 26104064, 32630080, 37291520, 52208128, 65260160, 130520320, 261040640]

約数ペア:

[(1, 261040640), (2, 130520320), (4, 65260160), (5, 52208128), (7, 37291520), (8, 32630080), (10, 26104064), (14, 18645760), (16, 16315040), (20, 13052032), (28, 9322880), (32, 8157520), (35, 7458304), (40, 6526016), (49, 5327360), (56, 4661440), (64, 4078760), (70, 3729152), (80, 3263008), (98, 2663680), (112, 2330720), (128, 2039380), (140, 1864576), (160, 1631504), (196, 1331840), (224, 1165360), (245, 1065472), (256, 1019690), (280, 932288), (320, 815752), (392, 665920), (448, 582680), (490, 532736), (512, 509845), (560, 466144), (640, 407876), (784, 332960), (896, 291340), (980, 266368), (1120, 233072), (1280, 203938), (1568, 166480), (1792, 145670), (1960, 133184), (2081, 125440), (2240, 116536), (2560, 101969), (3136, 83240), (3584, 72835), (3920, 66592), (4162, 62720), (4480, 58268), (6272, 41620), (7840, 33296), (8324, 31360), (8960, 29134), (10405, 25088), (12544, 20810), (14567, 17920), (15680, 16648)]