66779380

素因数分解:

$2^2\times 5^1\times {\mathrm{641}}^1\times {\mathrm{5209}}^1$

素因数の和:5859

約数の個数: 24

約数和(自身を含む): 140482440

約数和(自身を除く): 73703060

約数列:

[1, 2, 4, 5, 10, 20, 641, 1282, 2564, 3205, 5209, 6410, 10418, 12820, 20836, 26045, 52090, 104180, 3338969, 6677938, 13355876, 16694845, 33389690, 66779380]

約数ペア:

[(1, 66779380), (2, 33389690), (4, 16694845), (5, 13355876), (10, 6677938), (20, 3338969), (641, 104180), (1282, 52090), (2564, 26045), (3205, 20836), (5209, 12820), (6410, 10418)]