21236668

素因数分解:

$2^2\times {\mathrm{37}}^1\times {\mathrm{43}}^1\times {\mathrm{47}}^1\times {\mathrm{71}}^1$

素因数の和:202

約数の個数: 48

約数和(自身を含む): 40449024

約数和(自身を除く): 19212356

約数列:

[1, 2, 4, 37, 43, 47, 71, 74, 86, 94, 142, 148, 172, 188, 284, 1591, 1739, 2021, 2627, 3053, 3182, 3337, 3478, 4042, 5254, 6106, 6364, 6674, 6956, 8084, 10508, 12212, 13348, 74777, 112961, 123469, 143491, 149554, 225922, 246938, 286982, 299108, 451844, 493876, 573964, 5309167, 10618334, 21236668]

約数ペア:

[(1, 21236668), (2, 10618334), (4, 5309167), (37, 573964), (43, 493876), (47, 451844), (71, 299108), (74, 286982), (86, 246938), (94, 225922), (142, 149554), (148, 143491), (172, 123469), (188, 112961), (284, 74777), (1591, 13348), (1739, 12212), (2021, 10508), (2627, 8084), (3053, 6956), (3182, 6674), (3337, 6364), (3478, 6106), (4042, 5254)]