21301868

素因数分解:

$2^2\times 7^2\times {\mathrm{251}}^1\times {\mathrm{433}}^1$

素因数の和:702

約数の個数: 36

約数和(自身を含む): 43637832

約数和(自身を除く): 22335964

約数列:

[1, 2, 4, 7, 14, 28, 49, 98, 196, 251, 433, 502, 866, 1004, 1732, 1757, 3031, 3514, 6062, 7028, 12124, 12299, 21217, 24598, 42434, 49196, 84868, 108683, 217366, 434732, 760781, 1521562, 3043124, 5325467, 10650934, 21301868]

約数ペア:

[(1, 21301868), (2, 10650934), (4, 5325467), (7, 3043124), (14, 1521562), (28, 760781), (49, 434732), (98, 217366), (196, 108683), (251, 84868), (433, 49196), (502, 42434), (866, 24598), (1004, 21217), (1732, 12299), (1757, 12124), (3031, 7028), (3514, 6062)]