640588

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{97}}^1\times {\mathrm{127}}^1$

素因数の和:241

約数の個数: 24

約数和(自身を含む): 1229312

約数和(自身を除く): 588724

約数列:

[1, 2, 4, 13, 26, 52, 97, 127, 194, 254, 388, 508, 1261, 1651, 2522, 3302, 5044, 6604, 12319, 24638, 49276, 160147, 320294, 640588]

約数ペア:

[(1, 640588), (2, 320294), (4, 160147), (13, 49276), (26, 24638), (52, 12319), (97, 6604), (127, 5044), (194, 3302), (254, 2522), (388, 1651), (508, 1261)]