656140

素因数分解:

$2^2\times 5^1\times {\mathrm{53}}^1\times {\mathrm{619}}^1$

素因数の和:681

約数の個数: 24

約数和(自身を含む): 1406160

約数和(自身を除く): 750020

約数列:

[1, 2, 4, 5, 10, 20, 53, 106, 212, 265, 530, 619, 1060, 1238, 2476, 3095, 6190, 12380, 32807, 65614, 131228, 164035, 328070, 656140]

約数ペア:

[(1, 656140), (2, 328070), (4, 164035), (5, 131228), (10, 65614), (20, 32807), (53, 12380), (106, 6190), (212, 3095), (265, 2476), (530, 1238), (619, 1060)]