21383065

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{139}}^1\times {\mathrm{2797}}^1$

素因数の和:2952

約数の個数: 16

約数和(自身を含む): 28203840

約数和(自身を除く): 6820775

約数列:

[1, 5, 11, 55, 139, 695, 1529, 2797, 7645, 13985, 30767, 153835, 388783, 1943915, 4276613, 21383065]

約数ペア:

[(1, 21383065), (5, 4276613), (11, 1943915), (55, 388783), (139, 153835), (695, 30767), (1529, 13985), (2797, 7645)]