51877280

素因数分解:

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

素因数の和:551

約数の個数: 144

約数和(自身を含む): 153838440

約数和(自身を除く): 101961160

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 16, 20, 26, 28, 32, 35, 40, 49, 52, 56, 65, 70, 80, 91, 98, 104, 112, 130, 140, 160, 182, 196, 208, 224, 245, 260, 280, 364, 392, 416, 455, 490, 509, 520, 560, 637, 728, 784, 910, 980, 1018, 1040, 1120, 1274, 1456, 1568, 1820, 1960, 2036, 2080, 2545, 2548, 2912, 3185, 3563, 3640, 3920, 4072, 5090, 5096, 6370, 6617, 7126, 7280, 7840, 8144, 10180, 10192, 12740, 13234, 14252, 14560, 16288, 17815, 20360, 20384, 24941, 25480, 26468, 28504, 33085, 35630, 40720, 46319, 49882, 50960, 52936, 57008, 66170, 71260, 81440, 92638, 99764, 101920, 105872, 114016, 124705, 132340, 142520, 185276, 199528, 211744, 231595, 249410, 264680, 285040, 324233, 370552, 399056, 463190, 498820, 529360, 570080, 648466, 741104, 798112, 926380, 997640, 1058720, 1296932, 1482208, 1621165, 1852760, 1995280, 2593864, 3242330, 3705520, 3990560, 5187728, 6484660, 7411040, 10375456, 12969320, 25938640, 51877280]

約数ペア:

[(1, 51877280), (2, 25938640), (4, 12969320), (5, 10375456), (7, 7411040), (8, 6484660), (10, 5187728), (13, 3990560), (14, 3705520), (16, 3242330), (20, 2593864), (26, 1995280), (28, 1852760), (32, 1621165), (35, 1482208), (40, 1296932), (49, 1058720), (52, 997640), (56, 926380), (65, 798112), (70, 741104), (80, 648466), (91, 570080), (98, 529360), (104, 498820), (112, 463190), (130, 399056), (140, 370552), (160, 324233), (182, 285040), (196, 264680), (208, 249410), (224, 231595), (245, 211744), (260, 199528), (280, 185276), (364, 142520), (392, 132340), (416, 124705), (455, 114016), (490, 105872), (509, 101920), (520, 99764), (560, 92638), (637, 81440), (728, 71260), (784, 66170), (910, 57008), (980, 52936), (1018, 50960), (1040, 49882), (1120, 46319), (1274, 40720), (1456, 35630), (1568, 33085), (1820, 28504), (1960, 26468), (2036, 25480), (2080, 24941), (2545, 20384), (2548, 20360), (2912, 17815), (3185, 16288), (3563, 14560), (3640, 14252), (3920, 13234), (4072, 12740), (5090, 10192), (5096, 10180), (6370, 8144), (6617, 7840), (7126, 7280)]