21000612285

素因数分解:

$3^3\times 5^1\times {\mathrm{199}}^1\times {\mathrm{449}}^1\times {\mathrm{1741}}^1$

素因数の和:2403

約数の個数: 64

約数和(自身を含む): 37627200000

約数和(自身を除く): 16626587715

約数列:

[1, 3, 5, 9, 15, 27, 45, 135, 199, 449, 597, 995, 1347, 1741, 1791, 2245, 2985, 4041, 5223, 5373, 6735, 8705, 8955, 12123, 15669, 20205, 26115, 26865, 47007, 60615, 78345, 89351, 235035, 268053, 346459, 446755, 781709, 804159, 1039377, 1340265, 1732295, 2345127, 2412477, 3118131, 3908545, 4020795, 5196885, 7035381, 9354393, 11725635, 12062385, 15590655, 21106143, 35176905, 46771965, 105530715, 155560091, 466680273, 777800455, 1400040819, 2333401365, 4200122457, 7000204095, 21000612285]

約数ペア:

[(1, 21000612285), (3, 7000204095), (5, 4200122457), (9, 2333401365), (15, 1400040819), (27, 777800455), (45, 466680273), (135, 155560091), (199, 105530715), (449, 46771965), (597, 35176905), (995, 21106143), (1347, 15590655), (1741, 12062385), (1791, 11725635), (2245, 9354393), (2985, 7035381), (4041, 5196885), (5223, 4020795), (5373, 3908545), (6735, 3118131), (8705, 2412477), (8955, 2345127), (12123, 1732295), (15669, 1340265), (20205, 1039377), (26115, 804159), (26865, 781709), (47007, 446755), (60615, 346459), (78345, 268053), (89351, 235035)]