256487180

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{413689}}^1$

素因数の和:413729

約数の個数: 24

約数和(自身を含む): 555999360

約数和(自身を除く): 299512180

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620, 413689, 827378, 1654756, 2068445, 4136890, 8273780, 12824359, 25648718, 51297436, 64121795, 128243590, 256487180]

約数ペア:

[(1, 256487180), (2, 128243590), (4, 64121795), (5, 51297436), (10, 25648718), (20, 12824359), (31, 8273780), (62, 4136890), (124, 2068445), (155, 1654756), (310, 827378), (620, 413689)]