80178420

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{190901}}^1$

素因数の和:190920

約数の個数: 48

約数和(自身を含む): 256572288

約数和(自身を除く): 176393868

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, 190901, 381802, 572703, 763604, 954505, 1145406, 1336307, 1909010, 2290812, 2672614, 2863515, 3818020, 4008921, 5345228, 5727030, 6681535, 8017842, 11454060, 13363070, 16035684, 20044605, 26726140, 40089210, 80178420]

約数ペア:

[(1, 80178420), (2, 40089210), (3, 26726140), (4, 20044605), (5, 16035684), (6, 13363070), (7, 11454060), (10, 8017842), (12, 6681535), (14, 5727030), (15, 5345228), (20, 4008921), (21, 3818020), (28, 2863515), (30, 2672614), (35, 2290812), (42, 1909010), (60, 1336307), (70, 1145406), (84, 954505), (105, 763604), (140, 572703), (210, 381802), (420, 190901)]