25938640

素因数分解:

$2^4\times 5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{509}}^1$

素因数の和:549

約数の個数: 120

約数和(自身を含む): 75698280

約数和(自身を除く): 49759640

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 16, 20, 26, 28, 35, 40, 49, 52, 56, 65, 70, 80, 91, 98, 104, 112, 130, 140, 182, 196, 208, 245, 260, 280, 364, 392, 455, 490, 509, 520, 560, 637, 728, 784, 910, 980, 1018, 1040, 1274, 1456, 1820, 1960, 2036, 2545, 2548, 3185, 3563, 3640, 3920, 4072, 5090, 5096, 6370, 6617, 7126, 7280, 8144, 10180, 10192, 12740, 13234, 14252, 17815, 20360, 24941, 25480, 26468, 28504, 33085, 35630, 40720, 46319, 49882, 50960, 52936, 57008, 66170, 71260, 92638, 99764, 105872, 124705, 132340, 142520, 185276, 199528, 231595, 249410, 264680, 285040, 324233, 370552, 399056, 463190, 498820, 529360, 648466, 741104, 926380, 997640, 1296932, 1621165, 1852760, 1995280, 2593864, 3242330, 3705520, 5187728, 6484660, 12969320, 25938640]

約数ペア:

[(1, 25938640), (2, 12969320), (4, 6484660), (5, 5187728), (7, 3705520), (8, 3242330), (10, 2593864), (13, 1995280), (14, 1852760), (16, 1621165), (20, 1296932), (26, 997640), (28, 926380), (35, 741104), (40, 648466), (49, 529360), (52, 498820), (56, 463190), (65, 399056), (70, 370552), (80, 324233), (91, 285040), (98, 264680), (104, 249410), (112, 231595), (130, 199528), (140, 185276), (182, 142520), (196, 132340), (208, 124705), (245, 105872), (260, 99764), (280, 92638), (364, 71260), (392, 66170), (455, 57008), (490, 52936), (509, 50960), (520, 49882), (560, 46319), (637, 40720), (728, 35630), (784, 33085), (910, 28504), (980, 26468), (1018, 25480), (1040, 24941), (1274, 20360), (1456, 17815), (1820, 14252), (1960, 13234), (2036, 12740), (2545, 10192), (2548, 10180), (3185, 8144), (3563, 7280), (3640, 7126), (3920, 6617), (4072, 6370), (5090, 5096)]