392780

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{479}}^1$

素因数の和:529

約数の個数: 24

約数和(自身を含む): 846720

約数和(自身を除く): 453940

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 479, 820, 958, 1916, 2395, 4790, 9580, 19639, 39278, 78556, 98195, 196390, 392780]

約数ペア:

[(1, 392780), (2, 196390), (4, 98195), (5, 78556), (10, 39278), (20, 19639), (41, 9580), (82, 4790), (164, 2395), (205, 1916), (410, 958), (479, 820)]