21011956

素因数分解:

$2^2\times 7^1\times {\mathrm{53}}^1\times {\mathrm{14159}}^1$

素因数の和:14223

約数の個数: 24

約数和(自身を含む): 42819840

約数和(自身を除く): 21807884

約数列:

[1, 2, 4, 7, 14, 28, 53, 106, 212, 371, 742, 1484, 14159, 28318, 56636, 99113, 198226, 396452, 750427, 1500854, 3001708, 5252989, 10505978, 21011956]

約数ペア:

[(1, 21011956), (2, 10505978), (4, 5252989), (7, 3001708), (14, 1500854), (28, 750427), (53, 396452), (106, 198226), (212, 99113), (371, 56636), (742, 28318), (1484, 14159)]