890304130

素因数分解:

$2^1\times 5^1\times {\mathrm{641}}^1\times {\mathrm{138893}}^1$

素因数の和:139541

約数の個数: 16

約数和(自身を含む): 1605059064

約数和(自身を除く): 714754934

約数列:

[1, 2, 5, 10, 641, 1282, 3205, 6410, 138893, 277786, 694465, 1388930, 89030413, 178060826, 445152065, 890304130]

約数ペア:

[(1, 890304130), (2, 445152065), (5, 178060826), (10, 89030413), (641, 1388930), (1282, 694465), (3205, 277786), (6410, 138893)]