19981672

素因数分解:

$2^3\times {\mathrm{71}}^1\times {\mathrm{127}}^1\times {\mathrm{277}}^1$

素因数の和:481

約数の個数: 32

約数和(自身を含む): 38430720

約数和(自身を除く): 18449048

約数列:

[1, 2, 4, 8, 71, 127, 142, 254, 277, 284, 508, 554, 568, 1016, 1108, 2216, 9017, 18034, 19667, 35179, 36068, 39334, 70358, 72136, 78668, 140716, 157336, 281432, 2497709, 4995418, 9990836, 19981672]

約数ペア:

[(1, 19981672), (2, 9990836), (4, 4995418), (8, 2497709), (71, 281432), (127, 157336), (142, 140716), (254, 78668), (277, 72136), (284, 70358), (508, 39334), (554, 36068), (568, 35179), (1016, 19667), (1108, 18034), (2216, 9017)]