1397380

素因数分解:

$2^2\times 5^1\times {\mathrm{109}}^1\times {\mathrm{641}}^1$

素因数の和:759

約数の個数: 24

約数和(自身を含む): 2966040

約数和(自身を除く): 1568660

約数列:

[1, 2, 4, 5, 10, 20, 109, 218, 436, 545, 641, 1090, 1282, 2180, 2564, 3205, 6410, 12820, 69869, 139738, 279476, 349345, 698690, 1397380]

約数ペア:

[(1, 1397380), (2, 698690), (4, 349345), (5, 279476), (10, 139738), (20, 69869), (109, 12820), (218, 6410), (436, 3205), (545, 2564), (641, 2180), (1090, 1282)]