81628260

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{194353}}^1$

素因数の和:194372

約数の個数: 48

約数和(自身を含む): 261211776

約数和(自身を除く): 179583516

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 194353, 388706, 583059, 777412, 971765, 1166118, 1360471, 1943530, 2332236, 2720942, 2915295, 3887060, 4081413, 5441884, 5830590, 6802355, 8162826, 11661180, 13604710, 16325652, 20407065, 27209420, 40814130, 81628260]

約数ペア:

[(1, 81628260), (2, 40814130), (3, 27209420), (4, 20407065), (5, 16325652), (6, 13604710), (7, 11661180), (10, 8162826), (12, 6802355), (14, 5830590), (15, 5441884), (20, 4081413), (21, 3887060), (28, 2915295), (30, 2720942), (35, 2332236), (42, 1943530), (60, 1360471), (70, 1166118), (84, 971765), (105, 777412), (140, 583059), (210, 388706), (420, 194353)]