673220

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{821}}^1$

素因数の和:871

約数の個数: 24

約数和(自身を含む): 1450008

約数和(自身を除く): 776788

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820, 821, 1642, 3284, 4105, 8210, 16420, 33661, 67322, 134644, 168305, 336610, 673220]

約数ペア:

[(1, 673220), (2, 336610), (4, 168305), (5, 134644), (10, 67322), (20, 33661), (41, 16420), (82, 8210), (164, 4105), (205, 3284), (410, 1642), (820, 821)]