21935590

素因数分解:

$2^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{139}}^1\times {\mathrm{367}}^1$

素因数の和:556

約数の個数: 32

約数和(自身を含む): 40803840

約数和(自身を除く): 18868250

約数列:

[1, 2, 5, 10, 43, 86, 139, 215, 278, 367, 430, 695, 734, 1390, 1835, 3670, 5977, 11954, 15781, 29885, 31562, 51013, 59770, 78905, 102026, 157810, 255065, 510130, 2193559, 4387118, 10967795, 21935590]

約数ペア:

[(1, 21935590), (2, 10967795), (5, 4387118), (10, 2193559), (43, 510130), (86, 255065), (139, 157810), (215, 102026), (278, 78905), (367, 59770), (430, 51013), (695, 31562), (734, 29885), (1390, 15781), (1835, 11954), (3670, 5977)]