128217880

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{9743}}^1$

素因数の和:9808

約数の個数: 64

約数和(自身を含む): 336752640

約数和(自身を除く): 208534760

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 47, 56, 70, 94, 140, 188, 235, 280, 329, 376, 470, 658, 940, 1316, 1645, 1880, 2632, 3290, 6580, 9743, 13160, 19486, 38972, 48715, 68201, 77944, 97430, 136402, 194860, 272804, 341005, 389720, 457921, 545608, 682010, 915842, 1364020, 1831684, 2289605, 2728040, 3205447, 3663368, 4579210, 6410894, 9158420, 12821788, 16027235, 18316840, 25643576, 32054470, 64108940, 128217880]

約数ペア:

[(1, 128217880), (2, 64108940), (4, 32054470), (5, 25643576), (7, 18316840), (8, 16027235), (10, 12821788), (14, 9158420), (20, 6410894), (28, 4579210), (35, 3663368), (40, 3205447), (47, 2728040), (56, 2289605), (70, 1831684), (94, 1364020), (140, 915842), (188, 682010), (235, 545608), (280, 457921), (329, 389720), (376, 341005), (470, 272804), (658, 194860), (940, 136402), (1316, 97430), (1645, 77944), (1880, 68201), (2632, 48715), (3290, 38972), (6580, 19486), (9743, 13160)]