621201640

素因数分解:

$2^3\times 5^1\times {\mathrm{1427}}^1\times {\mathrm{10883}}^1$

素因数の和:12321

約数の個数: 32

約数和(自身を含む): 1398811680

約数和(自身を除く): 777610040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1427, 2854, 5708, 7135, 10883, 11416, 14270, 21766, 28540, 43532, 54415, 57080, 87064, 108830, 217660, 435320, 15530041, 31060082, 62120164, 77650205, 124240328, 155300410, 310600820, 621201640]

約数ペア:

[(1, 621201640), (2, 310600820), (4, 155300410), (5, 124240328), (8, 77650205), (10, 62120164), (20, 31060082), (40, 15530041), (1427, 435320), (2854, 217660), (5708, 108830), (7135, 87064), (10883, 57080), (11416, 54415), (14270, 43532), (21766, 28540)]