261765720

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{197}}^1\times {\mathrm{3691}}^1$

素因数の和:3905

約数の個数: 96

約数和(自身を含む): 855288720

約数和(自身を除く): 593523000

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 30, 36, 40, 45, 60, 72, 90, 120, 180, 197, 360, 394, 591, 788, 985, 1182, 1576, 1773, 1970, 2364, 2955, 3546, 3691, 3940, 4728, 5910, 7092, 7382, 7880, 8865, 11073, 11820, 14184, 14764, 17730, 18455, 22146, 23640, 29528, 33219, 35460, 36910, 44292, 55365, 66438, 70920, 73820, 88584, 110730, 132876, 147640, 166095, 221460, 265752, 332190, 442920, 664380, 727127, 1328760, 1454254, 2181381, 2908508, 3635635, 4362762, 5817016, 6544143, 7271270, 8725524, 10906905, 13088286, 14542540, 17451048, 21813810, 26176572, 29085080, 32720715, 43627620, 52353144, 65441430, 87255240, 130882860, 261765720]

約数ペア:

[(1, 261765720), (2, 130882860), (3, 87255240), (4, 65441430), (5, 52353144), (6, 43627620), (8, 32720715), (9, 29085080), (10, 26176572), (12, 21813810), (15, 17451048), (18, 14542540), (20, 13088286), (24, 10906905), (30, 8725524), (36, 7271270), (40, 6544143), (45, 5817016), (60, 4362762), (72, 3635635), (90, 2908508), (120, 2181381), (180, 1454254), (197, 1328760), (360, 727127), (394, 664380), (591, 442920), (788, 332190), (985, 265752), (1182, 221460), (1576, 166095), (1773, 147640), (1970, 132876), (2364, 110730), (2955, 88584), (3546, 73820), (3691, 70920), (3940, 66438), (4728, 55365), (5910, 44292), (7092, 36910), (7382, 35460), (7880, 33219), (8865, 29528), (11073, 23640), (11820, 22146), (14184, 18455), (14764, 17730)]