278317420

素因数分解:

$2^2\times 5^1\times {\mathrm{199}}^1\times {\mathrm{69929}}^1$

素因数の和:70137

約数の個数: 24

約数和(自身を含む): 587412000

約数和(自身を除く): 309094580

約数列:

[1, 2, 4, 5, 10, 20, 199, 398, 796, 995, 1990, 3980, 69929, 139858, 279716, 349645, 699290, 1398580, 13915871, 27831742, 55663484, 69579355, 139158710, 278317420]

約数ペア:

[(1, 278317420), (2, 139158710), (4, 69579355), (5, 55663484), (10, 27831742), (20, 13915871), (199, 1398580), (398, 699290), (796, 349645), (995, 279716), (1990, 139858), (3980, 69929)]