121520780

素因数分解:

$2^2\times 5^1\times {\mathrm{641}}^1\times {\mathrm{9479}}^1$

素因数の和:10129

約数の個数: 24

約数和(自身を含む): 255618720

約数和(自身を除く): 134097940

約数列:

[1, 2, 4, 5, 10, 20, 641, 1282, 2564, 3205, 6410, 9479, 12820, 18958, 37916, 47395, 94790, 189580, 6076039, 12152078, 24304156, 30380195, 60760390, 121520780]

約数ペア:

[(1, 121520780), (2, 60760390), (4, 30380195), (5, 24304156), (10, 12152078), (20, 6076039), (641, 189580), (1282, 94790), (2564, 47395), (3205, 37916), (6410, 18958), (9479, 12820)]