1628140

素因数分解:

$2^2\times 5^1\times {\mathrm{127}}^1\times {\mathrm{641}}^1$

素因数の和:777

約数の個数: 24

約数和(自身を含む): 3451392

約数和(自身を除く): 1823252

約数列:

[1, 2, 4, 5, 10, 20, 127, 254, 508, 635, 641, 1270, 1282, 2540, 2564, 3205, 6410, 12820, 81407, 162814, 325628, 407035, 814070, 1628140]

約数ペア:

[(1, 1628140), (2, 814070), (4, 407035), (5, 325628), (10, 162814), (20, 81407), (127, 12820), (254, 6410), (508, 3205), (635, 2564), (641, 2540), (1270, 1282)]