491028620

素因数分解:

$2^2\times 5^1\times {\mathrm{139}}^1\times {\mathrm{176629}}^1$

素因数の和:176777

約数の個数: 24

約数和(自身を含む): 1038584400

約数和(自身を除く): 547555780

約数列:

[1, 2, 4, 5, 10, 20, 139, 278, 556, 695, 1390, 2780, 176629, 353258, 706516, 883145, 1766290, 3532580, 24551431, 49102862, 98205724, 122757155, 245514310, 491028620]

約数ペア:

[(1, 491028620), (2, 245514310), (4, 122757155), (5, 98205724), (10, 49102862), (20, 24551431), (139, 3532580), (278, 1766290), (556, 883145), (695, 706516), (1390, 353258), (2780, 176629)]