77531440

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{138449}}^1$

素因数の和:138469

約数の個数: 40

約数和(自身を含む): 206013600

約数和(自身を除く): 128482160

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 560, 138449, 276898, 553796, 692245, 969143, 1107592, 1384490, 1938286, 2215184, 2768980, 3876572, 4845715, 5537960, 7753144, 9691430, 11075920, 15506288, 19382860, 38765720, 77531440]

約数ペア:

[(1, 77531440), (2, 38765720), (4, 19382860), (5, 15506288), (7, 11075920), (8, 9691430), (10, 7753144), (14, 5537960), (16, 4845715), (20, 3876572), (28, 2768980), (35, 2215184), (40, 1938286), (56, 1384490), (70, 1107592), (80, 969143), (112, 692245), (140, 553796), (280, 276898), (560, 138449)]