65161280

素因数分解:

$2^6\times 5^1\times {\mathrm{157}}^1\times {\mathrm{1297}}^1$

素因数の和:1471

約数の個数: 56

約数和(自身を含む): 156274008

約数和(自身を除く): 91112728

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 157, 160, 314, 320, 628, 785, 1256, 1297, 1570, 2512, 2594, 3140, 5024, 5188, 6280, 6485, 10048, 10376, 12560, 12970, 20752, 25120, 25940, 41504, 50240, 51880, 83008, 103760, 203629, 207520, 407258, 415040, 814516, 1018145, 1629032, 2036290, 3258064, 4072580, 6516128, 8145160, 13032256, 16290320, 32580640, 65161280]

約数ペア:

[(1, 65161280), (2, 32580640), (4, 16290320), (5, 13032256), (8, 8145160), (10, 6516128), (16, 4072580), (20, 3258064), (32, 2036290), (40, 1629032), (64, 1018145), (80, 814516), (157, 415040), (160, 407258), (314, 207520), (320, 203629), (628, 103760), (785, 83008), (1256, 51880), (1297, 50240), (1570, 41504), (2512, 25940), (2594, 25120), (3140, 20752), (5024, 12970), (5188, 12560), (6280, 10376), (6485, 10048)]