64856380

素因数分解:

$2^2\times 5^1\times {\mathrm{641}}^1\times {\mathrm{5059}}^1$

素因数の和:5709

約数の個数: 24

約数和(自身を含む): 136437840

約数和(自身を除く): 71581460

約数列:

[1, 2, 4, 5, 10, 20, 641, 1282, 2564, 3205, 5059, 6410, 10118, 12820, 20236, 25295, 50590, 101180, 3242819, 6485638, 12971276, 16214095, 32428190, 64856380]

約数ペア:

[(1, 64856380), (2, 32428190), (4, 16214095), (5, 12971276), (10, 6485638), (20, 3242819), (641, 101180), (1282, 50590), (2564, 25295), (3205, 20236), (5059, 12820), (6410, 10118)]