8354220

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{19891}}^1$

素因数の和:19910

約数の個数: 48

約数和(自身を含む): 26734848

約数和(自身を除く): 18380628

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 19891, 39782, 59673, 79564, 99455, 119346, 139237, 198910, 238692, 278474, 298365, 397820, 417711, 556948, 596730, 696185, 835422, 1193460, 1392370, 1670844, 2088555, 2784740, 4177110, 8354220]

約数ペア:

[(1, 8354220), (2, 4177110), (3, 2784740), (4, 2088555), (5, 1670844), (6, 1392370), (7, 1193460), (10, 835422), (12, 696185), (14, 596730), (15, 556948), (20, 417711), (21, 397820), (28, 298365), (30, 278474), (35, 238692), (42, 198910), (60, 139237), (70, 119346), (84, 99455), (105, 79564), (140, 59673), (210, 39782), (420, 19891)]