261335620

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{281}}^1$

素因数の和:390

約数の個数: 144

約数和(自身を含む): 699411888

約数和(自身を除く): 438076268

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 35, 49, 52, 65, 70, 73, 91, 98, 130, 140, 146, 182, 196, 245, 260, 281, 292, 364, 365, 455, 490, 511, 562, 637, 730, 910, 949, 980, 1022, 1124, 1274, 1405, 1460, 1820, 1898, 1967, 2044, 2548, 2555, 2810, 3185, 3577, 3653, 3796, 3934, 4745, 5110, 5620, 6370, 6643, 7154, 7306, 7868, 9490, 9835, 10220, 12740, 13286, 13769, 14308, 14612, 17885, 18265, 18980, 19670, 20513, 25571, 26572, 27538, 33215, 35770, 36530, 39340, 41026, 46501, 51142, 55076, 66430, 68845, 71540, 73060, 82052, 93002, 102284, 102565, 127855, 132860, 137690, 143591, 178997, 186004, 205130, 232505, 255710, 266669, 275380, 287182, 357994, 410260, 465010, 511420, 533338, 574364, 715988, 717955, 894985, 930020, 1005137, 1066676, 1333345, 1435910, 1789970, 1866683, 2010274, 2666690, 2871820, 3579940, 3733366, 4020548, 5025685, 5333380, 7466732, 9333415, 10051370, 13066781, 18666830, 20102740, 26133562, 37333660, 52267124, 65333905, 130667810, 261335620]

約数ペア:

[(1, 261335620), (2, 130667810), (4, 65333905), (5, 52267124), (7, 37333660), (10, 26133562), (13, 20102740), (14, 18666830), (20, 13066781), (26, 10051370), (28, 9333415), (35, 7466732), (49, 5333380), (52, 5025685), (65, 4020548), (70, 3733366), (73, 3579940), (91, 2871820), (98, 2666690), (130, 2010274), (140, 1866683), (146, 1789970), (182, 1435910), (196, 1333345), (245, 1066676), (260, 1005137), (281, 930020), (292, 894985), (364, 717955), (365, 715988), (455, 574364), (490, 533338), (511, 511420), (562, 465010), (637, 410260), (730, 357994), (910, 287182), (949, 275380), (980, 266669), (1022, 255710), (1124, 232505), (1274, 205130), (1405, 186004), (1460, 178997), (1820, 143591), (1898, 137690), (1967, 132860), (2044, 127855), (2548, 102565), (2555, 102284), (2810, 93002), (3185, 82052), (3577, 73060), (3653, 71540), (3796, 68845), (3934, 66430), (4745, 55076), (5110, 51142), (5620, 46501), (6370, 41026), (6643, 39340), (7154, 36530), (7306, 35770), (7868, 33215), (9490, 27538), (9835, 26572), (10220, 25571), (12740, 20513), (13286, 19670), (13769, 18980), (14308, 18265), (14612, 17885)]