128876840

素因数分解:

$2^3\times 5^1\times {\mathrm{1439}}^1\times {\mathrm{2239}}^1$

素因数の和:3689

約数の個数: 32

約数和(自身を含む): 290304000

約数和(自身を除く): 161427160

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1439, 2239, 2878, 4478, 5756, 7195, 8956, 11195, 11512, 14390, 17912, 22390, 28780, 44780, 57560, 89560, 3221921, 6443842, 12887684, 16109605, 25775368, 32219210, 64438420, 128876840]

約数ペア:

[(1, 128876840), (2, 64438420), (4, 32219210), (5, 25775368), (8, 16109605), (10, 12887684), (20, 6443842), (40, 3221921), (1439, 89560), (2239, 57560), (2878, 44780), (4478, 28780), (5756, 22390), (7195, 17912), (8956, 14390), (11195, 11512)]