421420

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{1109}}^1$

素因数の和:1137

約数の個数: 24

約数和(自身を含む): 932400

約数和(自身を除く): 510980

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 380, 1109, 2218, 4436, 5545, 11090, 21071, 22180, 42142, 84284, 105355, 210710, 421420]

約数ペア:

[(1, 421420), (2, 210710), (4, 105355), (5, 84284), (10, 42142), (19, 22180), (20, 21071), (38, 11090), (76, 5545), (95, 4436), (190, 2218), (380, 1109)]