30987860

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{81547}}^1$

素因数の和:81575

約数の個数: 24

約数和(自身を含む): 68500320

約数和(自身を除く): 37512460

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 380, 81547, 163094, 326188, 407735, 815470, 1549393, 1630940, 3098786, 6197572, 7746965, 15493930, 30987860]

約数ペア:

[(1, 30987860), (2, 15493930), (4, 7746965), (5, 6197572), (10, 3098786), (19, 1630940), (20, 1549393), (38, 815470), (76, 407735), (95, 326188), (190, 163094), (380, 81547)]