8651240

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{127}}^1\times {\mathrm{131}}^1$

素因数の和:282

約数の個数: 64

約数和(自身を含む): 21288960

約数和(自身を除く): 12637720

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 127, 130, 131, 254, 260, 262, 508, 520, 524, 635, 655, 1016, 1048, 1270, 1310, 1651, 1703, 2540, 2620, 3302, 3406, 5080, 5240, 6604, 6812, 8255, 8515, 13208, 13624, 16510, 16637, 17030, 33020, 33274, 34060, 66040, 66548, 68120, 83185, 133096, 166370, 216281, 332740, 432562, 665480, 865124, 1081405, 1730248, 2162810, 4325620, 8651240]

約数ペア:

[(1, 8651240), (2, 4325620), (4, 2162810), (5, 1730248), (8, 1081405), (10, 865124), (13, 665480), (20, 432562), (26, 332740), (40, 216281), (52, 166370), (65, 133096), (104, 83185), (127, 68120), (130, 66548), (131, 66040), (254, 34060), (260, 33274), (262, 33020), (508, 17030), (520, 16637), (524, 16510), (635, 13624), (655, 13208), (1016, 8515), (1048, 8255), (1270, 6812), (1310, 6604), (1651, 5240), (1703, 5080), (2540, 3406), (2620, 3302)]