28663780

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{75431}}^1$

素因数の和:75459

約数の個数: 24

約数和(自身を含む): 63362880

約数和(自身を除く): 34699100

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 380, 75431, 150862, 301724, 377155, 754310, 1433189, 1508620, 2866378, 5732756, 7165945, 14331890, 28663780]

約数ペア:

[(1, 28663780), (2, 14331890), (4, 7165945), (5, 5732756), (10, 2866378), (19, 1508620), (20, 1433189), (38, 754310), (76, 377155), (95, 301724), (190, 150862), (380, 75431)]